Synthesis of 5-spiro (5′-methylisatin)-4-acetyl-2-(acetylamino)-Δ2-1,3,4-thiadiazoline and 5-spiro(5′-methylisatin)-4-acetyl-2-(5′-methylisatin-3′-hydrazino)-Δ2-1,3,4-thiadiazoline

被引:0
|
作者
Islam, R [1 ]
Abedin, MJ [1 ]
Khayer, K [1 ]
Islam, MR [1 ]
机构
[1] Jahangirnagar Univ, Dept Chem, Dhaka, Bangladesh
来源
INDIAN JOURNAL OF CHEMISTRY SECTION B-ORGANIC CHEMISTRY INCLUDING MEDICINAL CHEMISTRY | 2001年 / 40卷 / 03期
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中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Condensation of 5-methylisatin 1 with thiosemicarbazide in glacial acetic acid gives 5-methylisatin-3-thiosemicarbazone 2, whereas with thiocarbohydrazide gives bis-5-methylisatin-3-thiocarbohydrazone 3. Acetylation of 2 and 3 with acetic anhydride affords 5-spiro (5'-methylisatin)-4-acetyl-2-(acetylamino)-Delta (2)-1,3,4-thiadiazoline 4 and 5-spiro(5'-methylisatin)-4-acetyl-2-(5'-methylisatin-3'-hydrazino)-Delta (2)-1,3,4-thiadiazoline 5 hydride furnishes 1,1'-N,N-dimethylated product 6.
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页码:240 / 242
页数:3
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