SELF-ASSOCIATION OF DIPYRRINONES OBSERVED BY 2D-NOE NMR AND DIMERIZATION CONSTANTS CALCULATED FROM H-1-NMR CHEMICAL-SHIFTS

被引：73

作者：

NOGALES, DF ^{[1
]}

MA, JS ^{[1
]}

LIGHTNER, DA ^{[1
]}

机构：

[1] CHINESE ACAD SCI,INST PHOTOGRAPH CHEM,BEIJING,PEOPLES R CHINA

来源：

TETRAHEDRON | 1993年 / 49卷 / 12期

关键词：

D O I：

10.1016/S0040-4020(01)86316-X

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Methyl xanthobilirubinate (1) and methyl neoxanthobilirubinate (2) self associate, as seen by 2D-NOE NMR, to form hydrogen-bonded dimers in CDCl3. Association constants K(A) = 25,000 (1) and 12,000 M-1 (2) at 22-degrees-C are derived from analysis of concentration-dependent N-H chemical shifts.

引用

页码：2361 / 2372

页数：12

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