Method of preparing 3-(s)-furan derivatives

Details Method of preparing 3-(s)-furan derivatives Method of preparing 3-(s)-furan derivatives

C - Chemistry, Metallurgy

07

D

C07D 307/64 (2006.01)

Patent

CA 2098172

18 Ref. 6510/252 Abstract The invention is concerned with a process for the manufacture of substituted furans which are, in particular, flavorants; thereby 4-hydroxy-2-yn-1-ones or acetals or ketals thereof are cyclized with nucleophilic S-compounds to 3-S- furans, whereby this 3-S atom can be optionally substituted, and the acetylene derivatives, the 4-hydroxy-2-yn-1-ones, can be optionally 1- and/or 4-alkyl or alkenyl substituted.

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