1 research outputs found
FeCl<sub>3</sub>‑Promoted [3 + 2] Annulations of γ‑Butyrolactone Fused Cyclopropanes with Heterocumulenes
The
[3 + 2] annulations of γ-butyrolactone fused donor–acceptor
(D–A) cyclopropanes with aromatic isothiocyanates and dialkyl
carbodiimides promoted by FeCl<sub>3</sub> is reported. A series of
bicyclic/polycyclic γ-butyrolactone fused thioimidates and γ-butyrolactone
fused amidines containing four contiguous stereogenic centers were
obtained in excellent yields as single stereoisomers