SIMPLE AND CONDENSED BETA-LACTAMS - PART 31 - ACID-CATALYZED RING CLOSURES AND RING TRANSFORMATIONS OF SOME 3-ARYLOXY-4-OXOAZETIDIN-2-CARBALDEHYDES

Authors
BERTHA F FETTER J KAJTARPEREDY M LEMPERT K CZIRA G
Citation
F. Bertha et al., SIMPLE AND CONDENSED BETA-LACTAMS - PART 31 - ACID-CATALYZED RING CLOSURES AND RING TRANSFORMATIONS OF SOME 3-ARYLOXY-4-OXOAZETIDIN-2-CARBALDEHYDES, Tetrahedron, 54(50), 1998, pp. 15227-15242
Citations number
9
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
54
Issue
50
Year of publication
1998
Pages
15227 - 15242
Database
ISI
SICI code
0040-4020(1998)54:50<15227:SACB-P>2.0.ZU;2-J
Abstract
Carbaldehydes 1a and 1b, when treated with Lewis or Bronsted acids in non-aromatic solvents or in nitrobenzene afford dihydrochromeno[3,2-b] azet-2(1H)-ones of types 4-6 and 10. In toluene, chloro- and fluoro-be nzene related compounds of types 7-9 were obtained, in the last named two solvents accompanied by pyrrolidin-2-one derivatives 11-15. (C) 19 98 Elsevier Science Ltd. All rights reserved.