PANEAPF shows high catalytic activity in the acetalization of aldehydes owing to the high utilization efficiency of its functionalized acid sites. In addition, the strong polarity micro‐environment in the surface layers of PANEAPF make it highly suitable for catalytic application in both water and alcohol. Furthermore, the fiber catalyst can be applied to the acetalization of aldehydes in a continuous‐flow
The thioacetalisation of a variety of heterocyclic, aromatic, and aliphatic carbonyl compounds (1 mmol) with ethane-1,2-dithiol (1 mmol) using silica sulphuric acid (SSA) is presented as an efficient heterogeneous catalyst under mild and solvent-free conditions at 60°C. The thioacetals were formed within a short reaction time (1–34 min) and isolated with 90–98 % yield following an extractive procedure
Direct Access to Thiocyano-Thioesters from Cyclic Thioacetals via Photoredox Catalysis: An Introduction of Two Functional Groups in One Pot
作者:Pankaj D. Dharpure、Mousumi Behera、Vikas V. Khade、Archana S. Thube、Ramakrishna G. Bhat
DOI:10.1021/acs.orglett.2c02601
日期:2022.9.30
cyanation is highly limited to very few types of organic compounds. Herein, we report the direct cyanation of cyclic thioacetals for accessing compounds with two different functional groups (thiocyano-thioesters) in one pot using sodium thiocyanate via photoredox catalysis. The protocol has been further extended for the direct cyanation of disulfides and diselenide to access aryl thiocyanates and aryl selenocyanate
Base Dependent Rearrangement of Dithiane and Dithiolane under Visible‐light Photoredox catalysis
作者:Pankaj D. Dharpure、Mousumi Behera、Archana S. Thube、Ramakrishna G. Bhat
DOI:10.1002/asia.202201128
日期:2023.2.14
Oxidative rearrangement of cyclicdithioacetals by the controlled C−S bond cleavage delivers the useful disulfide-linked-dithioesters via the visible light photoredox catalysis without using the external oxidizing reagent.