THE CONFORMATION OF TRISPYRAZOLYLMETHANES - AN EXPERIMENTAL AND THEORETICAL-STUDY

被引：0

作者：

CLARAMUNT, RM

LOPEZ, C

JAIME, C

VIRGILI, A

MARCO, C

ELGUERO, J

机构：

[1] UNIV AUTONOMA BARCELONA,FAC CIENCIAS,DEPT QUIM,E-08193 BARCELONA,SPAIN

[2] CSIC,INST CIENCIA & TECNOL POLIMEROS,E-28006 MADRID,SPAIN

来源：

HETEROCYCLES | 1995年 / 40卷 / 01期

关键词：

D O I：

暂无

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A combination of methods which include MM2 and MNDO calculations, nmr spectroscopy in the solid state (CPMAS) and in solution (H-1, C-13, LSR, chiral solvents and NOE experiments), DSC and X-ray powder diffraction has been used to study the conformation of tris(pyrazol-1-yl)methanes and ethanes. It has been shown that tris(3,5-dimethylpyrazol-1-yl)methane (4)exists in two isolable isomers, the ABB and the BBB, whose interconversion by melting, crystallization and sublimation has been studied.

引用

页码：175 / 186

页数：12

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