H. Nishiyama et al., ASYMMETRIC INDUCTION IN INTRAMOLECULAR S(N)2' REACTION - ENANTIOSELECTIVE SYNTHESIS OF CYCLOPENTA[B]BENZOFURAN WITH CHIRAL LITHIUM ALKOXIDES, Synlett, (10), 1997, pp. 1147
An enantioselective intramolecular cyclization of the bis-phenyllithiu
m species 3 was attained by addition of chiral lithium alkoxides to pr
oduce a cyclopenta[b]benzofuran 2 with high % ee's up to 87 %.