2-phosphaindolizines via 1,5-electrocyclization

Authors
Bansal, RK Surana, A Gupta, N
Citation
Rk. Bansal et al., 2-phosphaindolizines via 1,5-electrocyclization, TETRAHEDR L, 40(8), 1999, pp. 1565-1568
Citations number
20
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
40
Issue
8
Year of publication
1999
Pages
1565 - 1568
Database
ISI
SICI code
0040-4039(19990219)40:8<1565:2V1>2.0.ZU;2-J
Abstract
N-Pyridinium dichlorophosphinomethylides disproportionate to generate bis(N -pyridiniumylidyl)phosphenium chloride which undergoes I, 5-electrocyclizat ion to give 2-phosphaindolizines. In one-pot synthesis N-(alkoxycarbonylmet hyl)pyridinium bromide reacts with PCl3 in presence of Et3N to form 2-phosp haindolizine. (C) 1999 Elsevier Science Ltd. All rights reserved.