作者:Zbigniew Pakulski、Renata Kwiatosz、K. Michał Pietrusiewicz
DOI:10.1016/j.tet.2004.12.004
日期:2005.2
The deprotonation of 1-phenyl-3-phospholene I-oxide. I-sulfide or I-borane with I or 2 equiv of LDA, followed by quenching, with electrophiles gave a range of 2-mono- or 2.5-disubstituted phospholene derivatives in good yield. Only trans substitution in relation to the P-Ph group was observed. Treatment of lithiated phospholene intermediates with 1,3-dihaloalkanes afforded annulated 2-phenyl-2phosphabicyclo[3.3.0]oct-3-ene derivatives. The annulation reactions occurred with high regio- and stereoselectivity and led to the exclusive formation of the exo-Ph-P substituted products. (C) 2004 Elsevier Ltd. All rights reserved.