Synthesis and structure of 1-{2,2-dimethyl-4,6-dioxo-5-(1-pyridinio)-1,3-dioxan-5-yl}pyridinium ylide: A new route to Meldrum's acid derivatives

被引：0
|
作者：
Kuhn, N [1 ]
Al-Sheikh, A [1 ]
Steimann, M [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 | 2003年 / 58卷 / 05期
关键词：
synthetic methods; heterocycles; betaines; 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：
2-Bromo-5,5-dimethyl-4,6-dioxo-1,3-dioxine (3) reacts with pyridine and aqueous potassium carbonate to give 1-{2,2-dimethyl-4,6-dioxo-5-(1-pyridinio)-1,3-dioxan-5-yl}pyridinium ylide (5). The crystal structure analysis confirms the betaine nature of 5 consisting of two distored ring fragments [interplanar angle 58.0(4)degrees] connected by a C-N single bond [1.440(1) Angstrom].
引用
收藏
页码：381 / 384
页数：4
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