On the Intramolecular 1, 4-Dipolar Cycloaddition Reaction of Thiazinium Betaines for the Construction of Aza-, Diaza-, and Polyaza-Heterocyclic Ring Systems

A Padwa, SJ Coats, SR Harring, L Hadjiarapoglou…

Index: Padwa; Coats; Harring; Hadjiarapoglou; Semones Synthesis, 1995 , # 8 p. 973 - 984

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Citation Number: 11

Abstract

1a 1b 1c not readily accessible by cyclocondensation routes. The overall convenience of this method, the ease of access to starting materials, and the relatively high yields and pu- rity of the products obtained suggested its application to the preparation of a number of polycyclic ring systems of interest in natural product chemistry. This paper esta-blishes the synthetic utility of the intramolecular 1, 4-di-polar cycloaddition of a series of conjugated ...