- 作者: 黃茂榮; 田憲儒; 黃玲媛; 陳孟炘
- 作者服務機構: Department of Chemistry, National Cheng Kung University, Tainan, Taiwan 700
- 中文摘要:
A convenient method to prepare 4-formyl-3-arylsydnone (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-carbonitrile (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 mechanisms are suggested. - 英文摘要: --
- 中文關鍵字: The Vilsmeier reaction; the Schmidt reaction; 4-formyl-3-arylsydnone; 3-arylsydnone-4-carboxamide; 3-arylsydnone-4-carbonitrile.
- 英文關鍵字: The Vilsmeier reaction; the Schmidt reaction; 4-formyl-3-arylsydnone; 3-arylsydnone-4-carboxamide; 3-arylsydnone-4-carbonitrile.