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Sydnone Compounds. XX. The Synthesis and the Schmidt Reaction of 4‐Formyl‐3‐Arylsydnone

 

作者: Mou‐Yung Yeh,   Hsien‐Ju Tien,   Llng‐Yuang Huang,   Meng‐Hsin Chen,  

 

期刊: Journal of the Chinese Chemical Society  （WILEY Available online 1983）
卷期: Volume 30, issue 1  

页码: 29-37

 

ISSN:0009-4536

 

年代: 1983

 

DOI:10.1002/jccs.198300005

 

出版商: WILEY‐VCH Verlag

 

关键词: The Vilsmeier reaction;the Schmidt reaction;4‐formyl‐3‐arylsydnone;3‐arylsydnone‐4‐carboxamide;3‐arylsydnone‐4‐carbonitrile

 

数据来源: WILEY

 

摘要:

AbstractA convenient method to prepare 4‐formyl‐3‐arylsydone (I) from 3‐arylsydnone by the Vilsmeier reaction in moderate yields (30%‐76%) was carefully investigated.According to the Schmidt reaction, I reacts with sodium azide in concentrated sulfuric acid to produce 3‐arylsydnone‐4‐carboxamide (II). But 3‐arylsydnone‐4‐carhonitrile (III) is obtained, if dilute sulfuric acid was used instead.When III treates with concentrated sulfuric acid, II is obtained in good yield. The all possible reaction mec

 

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