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Exploring the mechanism of the reductive amination of acetophenones via Borch approach: the role of the acid catalyst

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00160E, Paper
João Pedro Albuquerque Souza, Amanda Krauskopf Jacobs, Leandro Piovan, Renan Borsoi Campos
The energetic viability of several mechanistic variations of the reductive amination of acetophenones via the Borch approach was reexamined through density functional theory calculations. The crucial involvement of the acid...
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3-Halo-5,6-dihydro-4H-1,2-oxazine N-oxides as synthetic equivalents of unsaturated nitrile oxides in the [3 + 2]-cycloaddition with arynes: synthesis of substituted 3-vinyl-1,2-benzisoxazoles

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00391H, Communication
Alexander A. Lukoyanov, Svetlana A. Aksenova, Andrey A. Tabolin, Alexey Yu. Sukhorukov
3-Halo-1,2-oxazine N-oxide derivatives act as surrogates of vinyl nitrile oxides in tandem [3 + 2]-cycloaddition/[3 + 2]-cyclofragmentation with arynes leading to benzisoxazoles.
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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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Dess–Martin periodinane-mediated oxidation of the primary alcohol of cytidine into a carboxylic acid

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00240G, Communication
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Alexandra R. E. Serre, Vibhu Jha, Adèle Rivault, Leif A. Eriksson, Goreti Ribeiro Morais, Robert A. Falconer
Herein we describe the first example of the conversion of the primary alcohol of cytidine into a carboxylic acid by use of the Dess–Martin periodinane oxidising agent.
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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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Photoproperties of Favipiravir and their 6-Substituted Analogues: Fluorescence Controlled through Halogen Substitution and Tautomerism

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00397G, Paper
Angel H Romero, Marcos Couto, Ivan E Romero, German Fuentes, Matías N. Möller
Herein, we showed the photophysical properties of the favipiravir and their 6-substituted analogues. Also, we interpreted the origin of the fluorescence of the favipiravir and their 6-substituted analogues as function...
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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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Recent developments in the enzymatic modifications of steroid scaffolds

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00327F, Review Article
Open Access
Huibin Wang, Ikuro Abe
This review highlights the recent advancements in the enzymatic modifications of steroid scaffolds, emphasizing enzymatic hydroxylation, ketoreduction, dehydrogenation, enzymatic cascade reactions, and other modifications.
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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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Synthesis of Deuteriodifluoromethylthiolated Isocoumarins-1- imines and Isocoumarins Enabled by Multi-Component Reagents System (MCRS)

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00328D, Communication
Xuemin Li, Haofeng Shi, Jiaxin He, Jialiang Wu, Fengxia Sun, Yunfei Du
The combining use of BnSCF2D, mCPBA and Tf2O serves as an efficient multi-component reagents system (MCRS) for the synthesis of deuteriodifluoromethylthiolated isocoumarins-1-imines/isocoumarins via intramolecular cyclization/ deuteriodifluoromethylthiolation of 2-alkynylbenzamide/2-alkynylbenzoates. The approach...
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Natural products from human microbiome: an emergent frontier in organic synthesis and drug discovery

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00236A, Review Article
Goverdhan Mehta, Saumitra Sengupta, Srihari Pabbaraja
Often referred to as “second genome”, human microbiome is at the epicenter of a complex inter-habitat biochemical network, such as the “gut-brain axis”, which have emerged as significant determinant of...
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TEMPO/PhI(OAc)2 promotes the α-aminophosphinoylation of alcohols with amines and H-phosphine oxides in aqueous medium

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00302K, Communication
Qiang Huang, Xin Jin, Lvjia Wu, Jiangdong Li, Qianlu Xing, Xianheng Wang, Changkuo Zhao
The aminophosphinoylation of alcohols with amines and H-phosphine oxides provides an efficient and mild approach to access various α-aminoalkylphosphine oxides in good yields with good tolerance of functional groups using H2O as a clean solvent.
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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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Design, synthesis, and biological application of A–D–A-type boranil fluorescent dyes

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00297K, Paper
Wei Luo, Yiling Li, Liang Wang, Yanhua Qin, Qiao Cheng, Guochang Hu, Chaoyi Yao, Xiangzhi Song
Acceptor–donor–acceptor boranil fluorescent dyes, CSU-BF-R (R = H, CH3, and OCH3), were developed with strong red fluorescence and large Stokes shifts. CSU-BF-OCH3 could selectively sense intracellular hypochlorous acid in living cells and zebrafish.
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Facile synthesis of tetrahydroquinoline containing dithiocarbamate derivatives via one-pot sequential multicomponent reaction

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00490F, Communication
SIDDHARTHA KUMAR SENAPATI, Anit Pal, Animesh Das
An efficient sequential multi-component method for the synthesis of tertrahydroquinoline containing dithiocarbamate has been developed. This reaction involved a boronic acid-catalyzed reduction of quinoline to tertrahydroquinoline, followed by nucleophilic addition...
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A Highly Diastereoselective One-Pot Ugi/Radical Spirocyclization/Aza-Michael Addition Sequence

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00610K, Communication
Chandra Volla, Salman Khan, Abhradeep Chatterjee, Akshay Murali Nair
We hereby report a highly diastereoselective synthesis of chalcogenated azaspirotricycles via a one-pot Ugi/spirocyclization/ aza-Michael addition sequence. The reaction proceeded via a key visible light mediated spirocyclization step under mild,...
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New Generation of Highly Reactive Allylborating Agents For Cu(I)-Catalyzed Allylation of Chiral Sulfinylimines

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00291A, Paper
Michael S. Alexeev, Tatyana V. Strelkova, Michail M. Ilyin, Jr., Yulia V. Nelyubina, Ivan A. Bespalov, Michael Medvedev, Victor N Khrustalev, Nikolai Kuznetsov
The implementation of selective catalytic processes with highly active reagents is an attractive strategy that meets modern principles of sustainable development of chemistry. In the current study, we for the...
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N-Functionalization of beta-aminophosphonates; Cytotoxic effect of the new derivatives

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00243A, Paper
György Keglevich, Petra Regina Varga, Emőke Dinnyési, Zsuzsanna Szalai, Szilvia Bősze, Rita Oláhné Szabó, Laszlo Drahos, Konstantin Karaghiosoff
Beta-Aminophosponates obtained by the Michael addition of primary amines to the double bond of diethyl vinylphosphonate proved to be suitable starting materials (amine components) in the Kabachnik–Fields reaction with formaldehyde...
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Sustainable preparation of 2-acylbenzothiazoles under the cooperation of ionic liquids and microwave irradiation

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00315B, Paper
Shoushun Wang, Mengjie Liu, Yiyuan Yue, Xiude Hu, Yalin Zhang, Guodong Shen, Ruiguo Dong, Lilong Shi, Bing Yu, Xianqiang Huang
A series of 2-acylbenzothiazole derivatives were sustainably synthesized for the first time under the cooperation of ionic liquids and microwave irradiation, metal- and extra-additives-free conditions.
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Regioselective synthesis of 4-arylamino-1,2-naphthoquinones in eutectogel as a confined reaction medium using LED light

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00140K, Communication
R. Vara Prasad, Yogendra Kumar, R. Arun Kumar, Tohira Banoo, Subbiah Nagarajan
The use of a simple carbohydrate-derived eutectogel facilitating a LED-light-induced regioselective synthesis of 4-arylamino-1,2-naphthoquinones in good yields is 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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Base- and sulfur-promoted oxidative lactonization of chalcone-acetate Michael adducts: access to pyran-2-ones

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00479E, Communication
Cao Nguyen Nguyen, Duc Toan Nguyen, Ha An Tran, Dinh Hung Mac, Thi Thu Tram Nguyen, Pascal Retailleau, Thanh Binh Nguyen
A cost-effective, practical, straightforward and scalable synthesis of α-pyrones via base- and sulfur-promoted annulation of phenylacetates and chalcones is reported.
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Visible light-driven photocatalytic sulfonative oxidation of benzyl secondary amines

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00348A, Paper
Yong-Xiang Lü, Xinqian Wang, Ying-Ming Pan, Keyume Ablajan
A method for the α-oxidation and sulfonation of benzyl secondary amines was developed utilizing Ir(III) or Eosin Y as the photocatalyst in the presence of O2 as a green oxidant....
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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.




io

History API: Scroll Restoration




io

The EME Logger extension




io

As the price of aviation turbine fuel soars, airlines’ finances spin out of control




io

Regional airlines fly into rough weather

From poor applicability of policy to lack of quality manpower and capital, problems plaguing them are manifold




io

Indian aviation: A study in paradox

Accurate reading of the market is critical




io

Tech adoption will not lead to loss of jobs

Every half per cent increase in GDP requires 10 per cent growth in travel




io

Deep tech is helping airlines sustain operations during Covid

Integrated biometric-enabled frameworks for real-time test results, travel details and vaccine status are key to making air travel safe




io

From geopolitics strife to a war of words between two aviation giants

Qatar Airways and Airbus lock horns over safety concerns




io

Aviation industry shifts focus to digital

The pandemic has helped usher in automated touchpoints for tech-savvy flight passengers




io

Sustainable aviation fuels could be a game-changer

But adopting it in Indian aviation could take time




io

Evolution of security in aviation

Data and technology need to be adopted




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Blockchain: Piloting the future of aviation

Enables effective solutions that positively impact industry players and end consumers




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Mission to Net Zero: Aviation’s focus on making sustainable connections 

Flying the cleanest, greenest, youngest fleet possible can be a way towards the goal 




io

Navigating newer disruptions with maximum agility

Focusing on hyper-personalisation, using the right communication tools and platforms, engaging with the customers at the right time and place will give a much-needed fillip to the industry




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Compliance with regulation: Staying ahead is key




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Why has private capital not been taken to Indian aviation 

With banks becoming increasingly cautious and credit flows tightening, private capital must be explored and enticed




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OpenAI chair's AI startup Sierra gets $4.5 billion valuation in latest funding round

One-year-old Sierra focuses on selling artificial intelligence-powered customer service chatbots to enterprises




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Meta builds AI search engine to cut Google, Bing reliance, the Information reports

The Facebook-owner currently relies on Google and Bing search engines to give users answers on news, stocks and sports




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Microsoft Teams to launch threaded conversations, combined chats and channels features

The app has also added other changes in the interface so users can organise their chats better




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Jio’s Diwali Dhamaka plan offers year-long prepaid plan for ₹3,599

Jio is offering a prepaid plan of 2.5 GB of data per day for an entire year, priced at₹3,599, as part of a Diwali offer




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OpenAI builds first chip with Broadcom and TSMC, scales back foundry ambition

OpenAI is working with Broadcom and TSMC to build its first in-house chip designed to support its artificial intelligence systems, per sources




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Google ad change could affect millions of small businesses

Google is changing the way its Google Local Services ads work, which could affect millions of small businesses




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Elon Musk's xAI in talks to raise funding valuing it at $40 billion: Report

Earlier in October, OpenAI raised $6.6 billion in funding from investors which could value the company at $157 billion




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Microsoft, Meta, Apple, Amazon, and the burden of expectations knock Wall Street sharply lower

Drops for Big Tech companies including Microsoft and Facebook’s parent company Meta Platforms led Wall Street lower




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Perplexity AI CEO says “still haven’t gotten” a green card amid immigration debate ahead of U.S. Presidential Election 2024

Srinivas went on to work with OpenAI for a year before co-founding Perplexity AI in 2022