1,5-Electrocyclization of conjugated azomethine ylides derived from 3-formyl chromene and N-alkyl amino acids/esters,Organic & Biomolecular Chemistry

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1,5-Electrocyclization of conjugated azomethine ylides derived from 3-formyl chromene and N-alkyl amino acids/esters
Organic & Biomolecular Chemistry ( IF 3.2 ) Pub Date : 2017-08-11 00:00:00 , DOI: 10.1039/c7ob00705a
E. Pravardhan Reddy _{1,

2,

3,

4} , A. Sumankumar _{4,

5,

6,

7} , B. Sridhar _{4,

6,

8,

9} , Y. Hemasri _{1,

2,

4,

10} , Y. Jayaprakash Rao _{1,

1,

2,

3,

4} , B. V. Subba Reddy _{4,

5,

6,

7}

Affiliation

A novel strategy has been developed for the synthesis of chromeno[3,4-b]pyrrol-4(3H)-one and substituted pyrrole derivatives through 1,5-electrocyclization of conjugated azomethine ylides. This is the first example of the preparation of highly substituted pyrrole derivatives from chromene-3-carboxaldehydes (non-enolizable aldehydes) and N-alkyl amino acids/esters. This method is simple and applicable to a diverse range of substrates.

中文翻译：

衍生自3-甲酰基亚铬基和N-烷基氨基酸/酯的共轭甲亚胺基的1,5-环电化

已开发出一种新的策略，用于通过共轭偶氮甲亚胺的1，5-电环化合成chromeno [3,4- b ] pyrrol-4（3 H）-one和取代的吡咯衍生物。这是由亚甲基-3-羧醛（不可烯化的醛）和N-烷基氨基酸/酯制备高度取代的吡咯衍生物的第一个例子。该方法很简单，适用于各种基材。

更新日期：2017-09-20

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