A NEW PROCEDURE FOR THE SYNTHESIS OF 4H-PYRAZOLO[1,5-C][1,3,5]THIADIAZINE-4-THIONES

被引：10
|
作者：
VICENTINI, CB [1 ]
VERONESE, AC [1 ]
GUARNERI, M [1 ]
MANFRINI, M [1 ]
GIORI, P [1 ]
GUCCIONE, S [1 ]
机构：
[1] UNIV CATANIA,IST CHIM FARM & TOSSICOL,I-95125 CATANIA,ITALY
来源：
JOURNAL OF HETEROCYCLIC CHEMISTRY | 1994年 / 31卷 / 06期
关键词：
D O I：
10.1002/jhet.5570310632
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Thiation of N-(1-tert-butyl-3-methylpyrazol-5-yl)carboxamides 2 with the Lawesson reagent afforded the corresponding thiocarboxiamides 3. Heating of 3 in formic acid gave the N-dealkylated thiocarboxamides 4 which were cyclized into 4H-pyrazolo[1,5-c][1,3,5]thiadiazine-4-thiones 5 by treatment with thiophosgene.
引用
收藏
页码：1477 / 1480
页数：4
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