An unexpected reversal of diastereoselectivity in the [4+3] cycloaddn. of Me 2-fuorate with nitrogen-stabilized oxyallyl cations derived from epoxidn. of chiral allenamides is described here. This intriguing reversal in...
A review. Novel catalytic reactions via ruthena- or rhodacyclic intermediates have been developed by our research group. We initiated our study from (1) ruthenium-catalyzed [2 + 2] cycloaddn. of alkynes with alkenes, f...