反应详情

Processes for the preparation of resveratrol have been disclosed, inter alia, in WO 01/60774 and Tetrahedron Letters 43 (2002) 597-598. The latter reference describes a process wherein resveratrol is prepared by a multistep reaction sequence starting with 3,5-dihydroxybenzaldehyde and involving a Heck reaction of 3,5-dihydroxystyrene with 4-acetoxy-iodobenzene in a yield of 70%. The process of the present invention utilizes a more readily available starting material and proceeds in less steps and superior yield, thus providing a technically more attractive approach to resveratrol and piceatannol and derivatives, such as esters, thereof.

1. customis prepared by a multistep reaction sequence