Unusual Reactions of (+)-Car-2-ene and (+)-Car-3-ene with Aldehydes on K10 Clay
作者:Irina V. Il'ina、Konstantin P. Volcho、Dina V. Korchagina、Georgi E. Salnikov、Alexander M. Genaev、Elena V. Karpova、Nariman F. Salakhutdinov
DOI:10.1002/hlca.201000145
日期:2010.11
The reactions of (+)‐car‐2‐ene (1) and (+)‐car‐3‐ene (2) with aldehydes in the presence of montmorillonite clay were studied for the first time (Schemes 3 and 5). The major products of these reactions are optically active, substituted hexahydroisobenzofurans, probably formed as a result of an attack of the protonated aldehyde at the cyclopropane ring. Quite unexpectedly, the products are cis‐configured