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Prank attack

YW storyteller contest: We were flooded with stories for the YW Storyteller contest announced on June 24. Here are some of the entries that almost made it.. Congratulations!




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Payback time!

YW storyteller contest: We were flooded with stories for the YW Storyteller contest announced on June 24. Here are some of the entries that almost made it… Congratulations!




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Ticket to story-ville

This week, we feature a book that is eligible for The Hindu Young World Goodbooks Award 2017. This book has been entered in the picture book category. Here’s also a book that tells the true story of Roald Dahl, one of the greatest storyteller of all time.




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Do or make?

Similar, yet different — here’s how to distinguish between these verbs.




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Back in time

Pallavi and Prakash are entrusted with the task of cleaning up the attic on a rainy day. What they find is treasure beyond compare.




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Joy of cooking

Head to the kitchen to cook up some mouth-watering delicacies




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Taking the long road

Linda Burney's, seat in the Parliament is a victory for her, and her people too!




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Honouring Khulu

On July 18, we celebrate Mandela Day. A day not only to honour the man himself, but also a chance for us to join the global movement to make the world a better place.




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Making a beeline

Does a beeline refer to a formation of bees? Or is there more to it?




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Click synthesis of dendronized malonates for the preparation of amphiphilic dendro[60]fullerenes

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D3OB01986A, Paper
Carlos Cruz-Hernández, Perla Y. López-Camacho, Gustavo Basurto-Islas, Aaron Rojas, Patricia Guadarrama, Melchor Martínez-Herrera
Click chemistry is a valuable methodology for obtaining dendronized malonate derivatives to derivatize C60 using the Bingel–Hirsch reaction.
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Metal- and light-free decarboxylative direct C–H alkylation of heteroarenes at room temperature

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00187G, Paper
Tong-Bo Zhang, Xi-Dong Guan, Yan Gao, Shi-Chao Lu, Bing-Long Li
This study reports a metal- and light-free decarboxylative C–H alkylation of heteroarenes at room temperature.
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New 2-pyridone-based donor–acceptor dyes: the effect of the donor group position, type of π-linker and acid–base characteristics of the medium on the photophysical properties

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00177J, Paper
Saveliy P. Sorokin, Mikhail Yu. Ievlev, Oleg V. Ershov
Synthesis of a series of new donor–acceptor dyes based on 2-pyridone and the study of the effect of the position of the donor group, the type of π-linker and the acid–base characteristics of the medium on their photophysical properties.
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Dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00190G, Paper
Kai-Cheng Yang, Shi-Lu Zheng, Zhong Wen, Yu-Shan Zhang, Hai-Liang Ni, Long Chen
A HOTf or Fe(OTf)3-catalyzed dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes was developed, which represents a brand-new procedure for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones.
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Kinetic resolution of 1,1'-binaphthyl-2,2'-diamine derivatives by chiral calcium phosphate-catalyzed acylation

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00355A, Paper
Tatsuhiro Uchikura, Yuki Kanno, Yukino Fukuda, Mikoto Sato, Takahiko Akiyama
Chiral calcium phosphate-catalyzed kinetic resolution of BINAM derivatives.
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Copper catalyzed dehydrogenative cyclization, alkenylation towards dihydroquinolinones

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00134F, Paper
Pari Keerthana, Fazlur-Rahman Nawaz Khan
An efficient copper-catalysized one-pot sequential synthesis of alkenylated quinolinyldihydroquinolinones is reported utilizing ketones, 1,3-cyclohexanediones, and benzyl alcohols via dehydrogenative cyclisation, followed by alkenylation. This highly straightforward method provides a mild...
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Generation of sulfones utilizing β-sulfinyl esters as masked aryl sulfinates under redox-neutral conditions

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00238E, Communication
Yixin Zhang, Zhu Yang, Hongjun Yang, Xuefeng Li, Lu Yang
A method for generation of SVI sulfones from β-sulfinyl esters (SIV) under transition-metal-free non-oxidative mild conditions is presented.
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HFIP-mediated C-3-alkylation of indoles and synthesis of indolo[2,3-b]quinolines & related natural products

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00414K, Paper
Auqib Rashid, Waseem I. Lone, Preeti Dogra, Showkat Rashid, Bilal A. Bhat
An expeditious metal free C-3 alkylation of indoles and its NIS-mediated deviation to indolo[2,3-b]quinolines is reported. Applications of these strategies in accessing bioactive natural products have also been demonstrated.
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A copper-catalyzed asymmetric Friedel–Crafts hydroxyalkylation of pyrazole-4,5-diones with 5-aminoisoxazoles

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00322E, Communication
Siyu Gao, Xiang Sun, Sijie Peng, Zhenggen Zha, Qi Sun, Zhiyong Wang
An asymmetric Friede-Crafts hydroxyalkylation reaction was developed under the catalysis of chiral copper complexes. A variety of pyrazolone derivatives were obtained with excellent yields and enantioselectivities.
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Rh(III)-catalysed C-H annulation of cis-stilbene acids with 2-diazo-1,3-diketones: A facile access to 6,7-dihydrobenzofuran-4(5H)-one and α-pyrone scaffolds

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00151F, Paper
Shankaraiah Nagula, Mary Sravani Galla, Nandini B. Kale, Akshay Kumawat, Darshana Bora
An efficient Rh(III)-catalysed C-H functionalization, tandem annulation of cis-stilbene acids using 2-diazo-1,3-diketones was devised. The protocol has solely afforded 6,7-dihydrobenzofuran-4(5H)-ones using alicyclic diazocarbonyls via decarbonylation and α-pyrones with aliphatic diazo...
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The synthesis of alk-2-ynl Weinreb amides via Pd/Cu-catalysed oxidative carbonylation of terminal alkynes

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00290C, Paper
Bharati Mourya, Sandip T. Gadge, Bhalchandra M. Bhanage
Synthesis of alk-2-ynl-Weinreb amides via Pd-catalyzed oxidative carbonylation of terminal alkynes and N,O-dimethylhydroxylamine hydrochloride at room temperature under low CO/O2 pressure is reported for the first time.
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Synthesis of alkenylphosphine oxides via Tf2O promoted addition–elimination of ketones and secondary phosphine oxides

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00318G, Communication
Jiangkai Ma, Lianjie Wang, Anjiang Qiao, Zhongxian Li, Fengqian Zhao, Junliang Wu
An efficient method for the synthesis of alkenylphosphine oxides via the addition-elimination of SPOs to ketones has been developed. The reaction exhibits good yields and compatibility. Several conversions have also proven the value of this method.
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Electrochemical nickel-catalyzed cross-coupling of glycosyl thiols with preactivated phenols and ketones

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00442F, Communication
Fuxin Li, Hui Liu, Wanyu Xing, Qingju Zhang, Liming Wang
Here we report an efficient electrochemical nickel-catalyzed cross-coupling reaction for the synthesis of S-glycosides from preactivated phenols and ketones.
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Covalently linked thieno[2,3-b]thiophene-fullerene dimers: synthesis and physical characterization

Org. Biomol. Chem., 2024, 22,2978-2984
DOI: 10.1039/D4OB00027G, Paper
Abdulrahman M. Alazemi, Mohammad H. BinSabt, Hamad M. Al-Matar, Alan L. Balch, Mona A. Shalaby
Linked thieno[2,3-b]thiophene-fullerene Dimers.
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Vinylogous and stereoselective domino synthesis of pyrano[2,3-c]pyrroles from alkylidene meldrum's acids

Org. Biomol. Chem., 2024, 22,2948-2952
DOI: 10.1039/D4OB00233D, Communication
Mariia Savchuk, Giang Vo-Thanh, Sylvain Oudeyer, Hélène Beucher, Jean-François Brière
An expeditious diatereoselective synthesis of pyrano[2,3-c]pyrroles thanks to a domino Vinylogous aza-Michael-Aldol-Cyclocondensation (aza-VMAC) reaction to alkylidene Meldrum's acid derivatives.
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Selective synthesis of an elusive C-functional bis-cyclam and study of its inhibition of the CXCR4 chemokine receptor

Org. Biomol. Chem., 2024, 22,3059-3067
DOI: 10.1039/D3OB02050A, Paper
Marie M. Le Roy, Sandra Claes, Nathalie Saffon-Merceron, Dominique Schols, Thibault Troadec, Raphaël Tripier
A rare example of C,C'-linked bis-cyclam has been synthesized with controlled manner in mild conditions thanks to the “bis-aminal” tool, and its good CXCR4-recognition properties could be demonstated in vitro.
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Photogenerated chlorine radicals activate C(sp3)–H bonds of alkylbenzenes to access quinazolinones

Org. Biomol. Chem., 2024, 22,2968-2973
DOI: 10.1039/D4OB00129J, Communication
Xin-Yao Pan, Gui-Xia Sun, Fang-Ping Huang, Wen-Jian Qin, Qing-Hu Teng, Kai Wang
An Fe-catalyzed visible-light induced condensation of alkylbenzenes with anthranilamides has been developed.
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Synthesis of alkynyl sulfides via base-promoted nucleophilic ring-opening of α-bromostyrene sulfonium salt

Org. Biomol. Chem., 2024, 22,2953-2957
DOI: 10.1039/D4OB00203B, Communication
Junqi Zhou, Ziyu Wang, Hanmiao Xu, Mengke Su, Jian Wen
An effective method for synthesizing various alkynyl sulfides has been developed using tetramethylene sulfoxide as a sulfur source through base-promoted nucleophilic ring-opening reactions.
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Selective enhancement of (6–4) photoproduct formation in dithymine dinucleotides driven by specific sugar puckering

Org. Biomol. Chem., 2024, 22,3025-3034
DOI: 10.1039/D4OB00279B, Paper
Jouda Jakhlal, Clément Denhez, Stéphanie Coantic-Castex, Agathe Martinez, Dominique Harakat, Thierry Douki, Dominique Guillaume, Pascale Clivio
Evidence is presented that (6–4) photoproduct formation between two thymine residues in dinucleotide analogues is significantly and specifically enhanced when the 5''- and 3''-end sugar puckering are mainly north and south, respectively.
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Photochromism of phenazine-2,3-diol derivatives through excited state intermolecular proton transfer based on keto–enol tautomerization

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00387J, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Kazuki Ohira, Kumpei Kozuka, Naoki Kaneda, Masahiro Yamamoto, Keiichi Imato, Yousuke Ooyama
It was found that phenazine-2,3-diol derivatives exhibit photochromism through excited state intermolecular proton transfer (ESInterPT) processes based on keto–enol tautomerization.
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Nickel-catalysed regio- and stereoselective hydrocyanation of alkynoates and its mechanistic insights proposed by DFT calculations

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00380B, Communication
Shigeru Arai, Koichi Nakazawa, Xiao-Fei Yang, Masaya Nakajima, Shinji Harada, Atsushi Nishida
This work discloses the origin of regio- and stereoselectivity of hydrocyanation of alkynoates.
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Cu(OTf)2/HFIP catalyzed regioselective cycloisomerization of indole-C3-functionalized alkynols to carbazoles

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00421C, Communication
Srinivasarao Yaragorla, Tabassum Khan, Sayonika Chakroborty
We report here a simple and atom economic cycloisomerization reaction of indole-tethered alkynols for constructing diverse carbazoles via 1,2-alkly migration using Cu(OTf)2/HFIP as the excellent promoter system.
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Revisiting Biginelli-like Reactions: Solvent Effects, Mechanisms, Biological Applications and Correction of Several Literature Reports

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00272E, Paper
Brenno A. D. Neto, Pedro Beck, Arthur Leitão, Yasmin Santana, Jose R. Correa, Carime Vitória da Silva Rodrigues, Daniel Machado, Guilherme Matos, Luciana Machado Ramos, Claudia Cristina Gatto, Carlos Kleber Z. Andrade, Sarah Caldas
This study critically reevaluates reported Biginelli-like reactions using a Kamlet-Abboud-Taft-based solvent effect model. Surprisingly, structural misassignments were discovered in certain multicomponent reactions, leading to the identification of pseudo three-component derivatives...
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Design, synthesis, biological evaluation and molecular docking studies of quinoline-anthranilic acid hybrids as potent anti-inflammatory drugs

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00040D, Paper
Sidra Siddique, Khalid Hussain, Naureen Shehzadi, Muhammad Arshad, Muhammad Nadeem Arshad, Sadaf Iftikhar, Farhat Saghir, Ayisha Shaukat, Muhammad Sarfraz, Nisar Ahmed
Despite the high global prevalence, rheumatoid arthritis lacks a satisfactory treatment.
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Isothiocyanates: Happy-Go-Lucky Reagents in Organic Synthesis

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00281D, Review Article
Bubul Das, Anjali Dahiya, Bhisma K Patel
: Owing to their unique structural features, isothiocyanates (ITCs) are a class of highly useful and inimitable reagents as the N=C=S group serves both as electrophile and nucleophile in organic...
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An FeCl3-catalyzed three-component reaction for the synthesis of β-(1,2,3-triazolyl)-ketones using DMF as a one-carbon source

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00207E, Communication
Ruilin Fang, Lei Zheng, Xuyang Chen, Can Wang, Yunfeng Chen
FeCl3-catalyzed oxidative condensation of NH-1,2,3-triazoles and aryl methyl ketones and DMF has been reported.
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Efficient synthesis of SCF3-containing 3-alkenylquinoxalinones via three-component radical cascade reaction

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00363B, Paper
Si-Yu Wang, Chu Liu, Wei Yang, Zhong-Ying Tian, Lin Yuan, Long-Yong Xie
A three-component cascade reaction of quinoxalinones, alkynes and AgSCF3 toward complete E-selective SCF3-containing 3-alkenylquinoxalinones was developed.
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K2CO3-Mediated (3+3-1) Annulation of 1,3-Acetonedicarboxylates with 2-Fluoro-1-nitroarenes: Synthesis of Indoles

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00488D, Paper
Meng-Yang Chang, Chin-Huey Ho, Hsing-Yin Chen
The K2CO3-mediated one-pot reaction of 1,3-acetonedicarboxylates with 2 equiv. of substituted 2-fluoro-1-nitrobenzenes has been developed to synthesize various 2,3-dicarboxylate indoles via a tandem (3 + 3 − 1) annulation pathway....
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Introduction to Service Worker: How to use Service Worker

Service Worker will revolutionize the way we build for the web. Learn about what it is, why it is important and how to use it.




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Rolling out Public Key Pinning with HPKP Reporting




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Updates to the service worker cache API




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Opening up skies

Drone rules must not challenge stakeholders




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A time when hijackings were dime-a-dozen in the US

Unthinkable in today’s hyper-security post-9/11 environment, forced diversions were commonplace in the ’60s




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Tickets to safe flying

A list of the top Covid-19-compliant airlines




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Walking through a new airport experience

Automation and biometrics will be the norm rather than the exception at leading airports in the pandemic world




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The making of ‘agile’ airlines

How adoption of AI, ML can empower flying




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India ahead in tech to make airports safer

Airports are also keeping pace to ensure safe, touchless and seamless journeys




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Pick the rear seats to fly safe

Passengers who pick a seat near the tail of an aeroplane are more likely to survive a crash




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Reskilling of airline workforce needed

Industry grapples with skilling/reskilling employees right from pilots to ground handling staff whose skills may be redundant




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Robust flight plans can keep airlines afloat




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Breaking down airline engineering and maintenance

An aircraft has three critical phases; induction, in-service and redelivery