Cobalt (II) chloride catalysed coupling of acetic anhydride with aldehydes. A novel synthesis of asymmetrical 1, 2-diones

S Ahmad, J Iqbal

Index: Ahmad, Saeed; Iqbal, Javed Journal of the Chemical Society, Chemical Communications, 1987 , p. 692 - 693

Full Text: HTML

Citation Number: 0

Abstract

We have recently shown1 that cobalt(r1) chloride efficiently catalyses the acylation of thiols, alcohols, and amines in very high yields. In an attempt to acylate an aldehyde with acetic anhydride in the presence of cobalt(I1) chloride we observed the unusual formation of unsymmetrical 1,2-diones in very high yields. Although there are various methods2 available for the general synthesis of 1,2-diones, very few of them are suitable for the synthesis of unsymmetrical ...