2H-1-benzopyrans .2. 4-chloro-3-methoxycarbonyl-2-dimethoxyphosphoryl-2H-1-benzopyran, (I), and 4-chloro-2-dimethoxyphosphoryl-2H-1-benzopyran, (II)

被引：2
|
作者：
Olszak, TA [1 ]
Grabowski, MJ [1 ]
Stepien, A [1 ]
Modranka, R [1 ]
Kostka, K [1 ]
机构：
[1] MED UNIV LODZ,FAC PHARM,INST CHEM,PL-90151 LODZ,POLAND
来源：
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1997年 / 53卷
关键词：
D O I：
10.1107/S010827019700735X
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The pyranoid rings are in a half-boat conformation in compound (I), C13H14ClO6P, and in a deformed half-boat-towards-half-chair conformation in compound (II), C11H12ClO4P. Fusion with the pyranoid ring has no significant influence on the planarity of the benzene ring in either compound. In both structures, the dimethoxyphosphoryl group is attached axially. The presence of the methoxycarbonyl substituent in (I) seems responsible for the disorder observed in the dimethoxyphosphoryl group.
引用
收藏
页码：1514 / 1516
页数：3
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