44. Asymmetric synthesis of 1,4-cycloheptadienes and bicyclo[3.2.1]octa-2,6-dienes by rhodium(II) N-(p-(tert-butyl)phenylsulfonyl)prolinate catalyzed reactions between vinyldiazomethanes and dienes

Authors: Huw M.L. Davies, Zhi-Qiang Peng, Jeffrey H. Houser

Tetrahedron Lett., 

199448, 8939-8942


Rhodium(II) (S)-(N-p(tertbutyl)phenylsulfonyl)prolinate catalyzed decomposition of vinyldiazomethanes in the presence of dienes results in a tandem cyclopropanation/Cope rearrangement, leading to a general and enantioselective approach for the construction of seven-membered carbocycles.

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