Bisthiosemicarbazones of 2,4-pentanedione are pyrazolines

被引：14

作者：

Hunter, DH ^{[1
]}

McRoberts, C

Vittal, JJ

机构：

[1] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada

[2] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore

来源：

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE | 1998年 / 76卷 / 05期

关键词：

pentanedione; bisthiosemicarbazone; pyrazoline; ethylenediamine;

D O I：

10.1139/cjc-76-5-522

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Attempts to prepare 2,4-bisthiosemicarbamoylpentanediones 1 via literature precedent from 2,4-pentanedione and three different thiosemicarbazides resulted instead in the formation of cyclic pyrazolines 5. The preparation was attempted with thiosemicarbazide, 4-methylthiosemicarbazide, and 4-ethylthiosemicarbazide, respectively. A single-crystal X-ray structure study of the product from 4-methylthiosemicarbazide confirmed the pyrazoline structure. This observation serves to correct earlier misassignments of structure.

引用

页码：522 / 524

页数：3

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