Synthesis of novel spiro tetrahydrotriapyrano-isoxazolines and pyrazolines

Authors
Reddy, DB Reddy, AS Padmaja, A
Citation
Db. Reddy et al., Synthesis of novel spiro tetrahydrotriapyrano-isoxazolines and pyrazolines, SYN COMMUN, 29(24), 1999, pp. 4433-4442
Citations number
9
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
SYNTHETIC COMMUNICATIONS
ISSN journal
00397911 → ACNP
Volume
29
Issue
24
Year of publication
1999
Pages
4433 - 4442
Database
ISI
SICI code
0039-7911(1999)29:24<4433:SONSTA>2.0.ZU;2-J
Abstract
Cis 2,6-Diphenyltetrahydrothiapyranone (1) was subjected to Wittig reaction to generate exocyclic double bond (2a-c). Cycloaddition of nitrile oxides and nitrile imines to the latter led to a novel spiro tetrahydrothiapyranoi soxazolines (3a-f) and spiro tetrahydrothiapyranopyrazolines (4a-f).