Tetrahedron Asymmetry p. 3593 - 3599 (1999)
Update date:2022-08-05
Topics:
Maestro, M. Carmen
Barquilla, M. Cruz
Martin, M. Rosario
Homochiral (5R)-4-bromo-5-(l-menthyloxy)furan-2(5H)-one with stabilized carbanions (from nitroalkanes, malononitrile and ethyl acetoacetate) afforded enantiopure bicyclic compounds in good yield (70-90%). 3- Oxabicyclic[3.1.0]hexan-2-one derivatives were obtained with nitromethane and malonic acid derivatives. However, dihydrofuro[3,4-d]isoxazol-6-one and dihydrofuro[3,4-b]furan-6(4H)-one derivatives were obtained from nitroethane and ethyl acetoacetate, respectively.
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