Tetrahedron Letters p. 4121 - 4124 (1990)
Update date:2022-08-03
Topics:
Franck-Neumann, M.
Geoffroy, P.
Miesch, M.
Doerwald, F. Zaragoza
The possibility of achieving convergent syntheses with elaborate carbenes is illustrated by the isobutenylalkynylcarbene II (R = Br).By reaction with 3-cyclohexen-1-one, the endo cyclopropanic adduct IIIa is formed as a major product.Metalation with MeLi, followed by reaction with MeI, proceeds with inversion of configuration ( -> sesquicarene skeleton, XI), or, after protection of the ketofunction, with retention of configuration ( -> isosesquicarene VIII).
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Doi:10.1016/S0022-328X(99)00008-X
(1999)Doi:10.1016/S0040-4039(01)89254-6
(1965)Doi:10.1016/S0040-4020(01)85676-3
(1994)Doi:10.1021/jacs.5b05100
(2015)Doi:10.1016/0021-9517(69)90352-2
(1969)Doi:10.1021/ja00757a033
(1972)
