Concurrent ring opening and halogenation of spiroketals

Authors
LaCour, TG Fuchs, PL
Citation
Tg. Lacour et Pl. Fuchs, Concurrent ring opening and halogenation of spiroketals, TETRAHEDR L, 40(25), 1999, pp. 4655-4658
Citations number
29
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON LETTERS
ISSN journal
00404039 → ACNP
Volume
40
Issue
25
Year of publication
1999
Pages
4655 - 4658
Database
ISI
SICI code
0040-4039(19990618)40:25<4655:CROAHO>2.0.ZU;2-Q
Abstract
Ring opening of various spiroketals with triphenylphosphine dihalides under neutral conditions produced omega-halo-enolethers in good to excellent yie ld. The method transformed even the very stable spiroketal of hecogenin ace tate at temperatures below any previously reported for such isomerative ope ning. (C) 1999 Elsevier Science Ltd. All rights reserved.