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

页码：1477 / 1480

页数：4

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