18268-10-5Relevant articles and documents
Graphene oxide (GO)-catalyzed chemoselective thioacetalization of aldehydes under solvent-free conditions
Roy, Babli,Sengupta, Debasish,Basu, Basudeb
, p. 6596 - 6600 (2014)
An efficient method for the synthesis of open chain, cyclic, and unsymmetrical dithioacetals from aryl/hetero-aryl/aliphatic aldehydes is described. The reaction is performed using graphene oxide (GO) as the catalyst under solvent-free and aerobic conditions. High chemoselectivity is observed in the reaction as aryl/alkyl ketones do not give thioketals under the condition.
Alkylidenation of esters on solid support and traceless synthesis of 2- substituted benzofurans
Guthrie, Emma J.,MacRitchie, Jackie,Hartley, Richard C.
, p. 4987 - 4990 (2007/10/03)
Polymer-supported esters are smoothly converted into enol ethers using a titanocene alkylidene prepared by treatment of 2-tert- butyldimethylsilyloxybenzaldehyde diphenyldithioacetal with the low valent titanium species Cp2Ti[P(OEt)3]2. Treatment of the enol ethers with acid leads to the release of ketones from the Wang resin in high yield. Traceless solid-phase synthesis of 2-substituted benzofurans is achieved in a three- step termination procedure. (C) 2000 Published by Elsevier Science Ltd.