BIMOLECULAR 4-CYCLOADDITION REACTIONS OF CROSS-CONJUGATED BETAINES WITH ELECTRON-RICH PI-SYSTEMS(2)

Authors
PADWA A COATS SJ SEMONES MA
Citation
A. Padwa et al., BIMOLECULAR 4-CYCLOADDITION REACTIONS OF CROSS-CONJUGATED BETAINES WITH ELECTRON-RICH PI-SYSTEMS(2), Tetrahedron letters, 34(34), 1993, pp. 5405-5408
Citations number
35
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
34
Issue
34
Year of publication
1993
Pages
5405 - 5408
Database
ISI
SICI code
0040-4039(1993)34:34<5405:B4ROCB>2.0.ZU;2-N
Abstract
Bicyclic anhydro-2-oxo-4-hydroxy-1,3-thiazinium hydroxides undergo 1,4 -dipolar cycloadditions with various electron rich pi-systems to give 4+2-cycloadducts which on further heating, extrude carbonyl sulfide pr oducing substituted alpha-pyridones.