Tetrahedron letters

Copper (II) tetrafluoroborate as an extremely efficient catalyst for 1, 3-dithiolane/dithiane formation from carbonyl compounds under solvent-free conditions at room …

RC Besra, S Rudrawar, AK Chakraborti

Index: Besra, Ram C.; Rudrawar, Santosh; Chakraborti, Asit K. Tetrahedron Letters, 2005 , vol. 46, # 37 p. 6213 - 6217

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Citation Number: 28

Abstract

Copper (II) tetrafluoroborate hydrate is a new and extremely efficient catalyst for 1, 3- dithiolane/dithiane formation from aromatic, heteroaromatic and aliphatic aldehydes and cyclic saturated ketones in 1–5min under solvent-free conditions at room temperature. The reaction is compatible with other functionalities such as ether, ester, hydroxyl, halide, nitro and cyano groups and exhibits excellent chemoselectivity. α, β-Unsaturated aldehydes/ ...