POLYMORPHIC BEHAVIOR AND MELTING POINTS OF CERTAIN BENZOCROWN ETHER COMPOUNDS

被引：9

作者：

STOTT, PE

MCCAUSLAND, CW

PARISH, WW

机构：

[1] Parish Chemical Company, Provo, Utah

来源：

JOURNAL OF HETEROCYCLIC CHEMISTRY | 1979年 / 16卷 / 03期

关键词：

D O I：

10.1002/jhet.5570160308

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Freshly prepared samples of dibenzo‐24‐crown‐8 and 4‐t‐butylbenzo‐15‐crown‐5 were found to have melting points which varied significantly from those origionally reported in the scientific literature. Samples prepared for the origional report were obtained, and were compared with the new samples. The origional report was found to be in error and the corrected values are provided. Dibenzo‐24‐crown‐8 was found to exist as at least three polymorphs. One of these is a glass. The other two are crystalline, but have identical melting points. It was discovered that the less stable form is thermally converted to the more stable form at temperatures below its melting point. Copyright © 1979 Journal of Heterocyclic Chemistry

引用

页码：453 / 455

页数：3

共 8 条

[1]

BRADSHAW J, COMMUNICATION

[2] SYNTHESIS AND ION BINDING OF SYNTHETIC MULTIDENTATE MACROCYCLIC-COMPOUNDS [J].