Derivatives of 1,3-dimethyl-5-methylenebarbituric acid

被引：0

作者：

Kuhn, N ^{[1
]}

Kuhn, A ^{[1
]}

Niquet, E ^{[1
]}

Steimann, M ^{[1
]}

Sweidan, K ^{[1
]}

机构：

[1] Univ Tubingen, Inst Anorgan Chem, D-72076 Tubingen, Germany

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2005年 / 60卷 / 09期

关键词：

zwitterionic compounds; heterocycles; imidazoles; barbituric acid; crystal structure;

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

1,3-Dimethylbarbituric acid (1, R = Me) reacts with aqueous formaldehyde in the presence of pyridine to give 1,3-dimethyl-2,4,6-trioxo-5-pyridinomethyl-1,3-perhydrodiazin-5-yl-pyridinium ylide (6) in good yield. From 6 and 2,3-dihydro-1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (7), the zwitterionic imidazolium derivative 1,3-dimethyl-2,4,6-trioxo-5-(1,3-diisopropyl-4,5-dimethylimidazoliomethyl)-1,3-perhydrodiazin-5-yl-imidazolium ylide (8) is obtained. Similarly, the phosphonium compound 1,3-diinethyl-2,4,6-trioxo-5-triphenylphosphoniomethyl-1,3-perhydrodiazin-5-y l-phosphonium ylide (9) is obtained from 6 and PPh3. The crystal structures of 8 and 9 are reported.

引用

页码：924 / 928

页数：5

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