Simple and condensed β-lactams -: Part 31.: Acid catalyzed ring closures and ring transformations of some 3-aryloxy-4-oxoazetidin-2-carbaldehydes

被引：12

作者：

Bertha, F

Fetter, J ^{[1
]}

Kajtár-Peredy, M

Lempert, K

Czira, G

机构：

[1] Tech Univ Budapest, Dept Organ Chem, H-1521 Budapest, Hungary

[2] Hungarian Acad Sci, Chem Res Ctr, Inst Chem, H-1525 Budapest, Hungary

[3] Gedeon Richter Chem Works Ltd, H-1475 Budapest, Hungary

来源：

TETRAHEDRON | 1998年 / 54卷 / 50期

基金：

匈牙利科学研究基金会;

关键词：

azetidinones; chromenes; diastereoselection; ring transformations;

D O I：

10.1016/S0040-4020(98)00951-X

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

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-benzene related compounds of types 7-9 were obtained, in the last named two solvents accompanied by pyrrolidin-2-one derivatives 11-15. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：15227 / 15242

页数：16

共 8 条

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