Chemoselective thioacetalisation and transthioacetalisation of carbonyl compounds catalysed by tetrabutylammonium tribromide (TBATB)

…, R Gopinath, M Goswami, BK Patel

Index: Naik, Sarala; Gopinath, Rangam; Goswami, Mousumi; Patel, Bhisma K. Organic and Biomolecular Chemistry, 2004 , vol. 2, # 11 p. 1670 - 1677

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Citation Number: 25

Abstract

Thioacetals and thioketals of various aldehydes and ketones were obtained directly from carbonyl compounds or by a transthioacetalisation process from cyclic O, O-acetals in the presence of dithiols and a catalytic amount of tetrabutylammonium tribromide (TBATB). Chemoselective thioacetalisation of aromatic aldehydes containing an electron-donating group in the presence of an aldehyde containing an electron-withdrawing group, ...

~91%

~89%

~10%

~91%

~94%

~95%

~10%

~96%

~95%

~96%

~95%

~92%

~98%

~95%

~99%

~92%

~97%

~99%

~87%

~89%

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