SYNTHESIS AND CHEMISTRY OF AZOLENINES .19. BASICITIES OF SOME 2H-PYRROLES AND 3H-PYRROLES AND THE REMARKABLY LARGE PK'A OF 2,2,3,5-TETRAMETHYL-2H-PYRROLE

被引：4
|
作者：
LUI, KH [1 ]
SAMMES, MP [1 ]
机构：
[1] UNIV HONG KONG, DEPT CHEM, POKFULAM RD, HONG KONG, HONG KONG
来源：
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY | 1990年 / 3卷 / 08期
关键词：
D O I：
10.1002/poc.610030810
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
pKa′ Values are reported for two 2H‐pyrroles and their 3H‐pyrrole isomers. The latter have basicities of the same order as similarly substituted pyridines, whereas the former are 2–2·5 pK units more basic, 2,2,3,5‐tetramethyl‐2H‐pyrrole having a pKa′ of 8·40, close to that for 2‐aminoimidazole. Possible reasons are given. Copyright © 1990 John Wiley & Sons Ltd.
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页码：555 / 557
页数：3
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