Brønsted Acid-Mediated Multicomponent One-Pot Approach to Direct Construction of 4-Aryl-hydrocoumarin Derivatives

P Sharma, S Singh, CK Hazra - The Journal of Organic Chemistry, 2023 - ACS Publications
The facile and efficient synthesis of a unique class of 4-aryl-hydrocoumarins having
enormous applications in medicinal chemistry and natural products is presented. We have …

Synthesis of Azepinoindoles and Oxepinoindoles through Brønsted-Acid-Catalyzed Cyclization of an In Situ Generated Dihydrospiroquinoline Intermediate

R Mahato, N Yadav, CK Hazra - Organic Letters, 2024 - ACS Publications
We have developed a straightforward and efficient synthetic protocol to produce 5, 6, 7, 12-
tetrahydrobenzo [2, 3] azepino [4, 5-b] indole and 7, 12-dihydro-6 H-benzo [2, 3] oxepino [4 …

PIDA as an Iodinating Reagent: Visible‐Light‐Induced Iodination of Pyrazolo[1,5‐a]pyrimidines and Other Heteroarenes

S Paul, S Das, T Choudhuri, P Sikdar… - Chemistry–An Asian …, 2024 - Wiley Online Library
We have developed a visible‐light‐mediated convenient and efficient strategy for the
iodination of heteroarenes using diacetoxyiodobenzene (PIDA) under photocatalyst‐free …

A Regioselective, One-Pot, Transition-Metal-Free α-Alkylation of Quinone Monoacetals for Various Organic Transformations

P Sharma, R Vishwakarma, R Rakheja… - Organic …, 2024 - ACS Publications
Regioselective reactions of biologically significant quinones are challenging. An
unprecedented advancement in quinone monoacetal (QMA) chemistry is proposed for …

One pot conversion of phenols and anilines to aldehydes and ketones exploiting α gem boryl carbanions

KK Das, D Aich, S Dey, S Panda - Nature communications, 2024 - nature.com
Functional group interconversion is an important asset in organic synthesis.
Phenols/anilines being naturally abundant and the carbonyl being the most common in a …