NMR-STUDIES OF 4(3H)-QUINAZOLINONES AND 4(3H)-QUINAZOLINETHIONES

被引：10
|
作者：
CHAKRABARTY, M [1 ]
BATABYAL, A [1 ]
MORALESRIOS, MS [1 ]
JOSEPHNATHAN, P [1 ]
机构：
[1] INST POLITECN NACL,CTR INVEST & ESTUDIOS AVANZADOS,DEPT QUIM,MEXICO CITY 07000,DF,MEXICO
来源：
MONATSHEFTE FUR CHEMIE | 1995年 / 126卷 / 6-7期
关键词：
4(3H)-QUINAZOLINONES; 4(3H)-QUINAZOLINETHIONES; H-1; NMR; C-13;
D O I：
10.1007/BF00807171
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Unambiguous H-1 and C-13 NMR assignments for 4(3H)-quinazolinones 1-6 and their corresponding 4-thiones 7-12 have been made. This resulted in the revision of the previous assignments for the two benzenoid carbons (C-5 and C-8) of quinazolinones 1,2,4, and 5. Thionation of the nucleophilic amides 1-6 has been found to cause a distinct change in the C-13 chemical shift of particularly C-4, but also of those of C-4a, C-5, and C-8a. One-bond and several long range heteronuclear coupling constants for the compounds have also been measured.
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页码：789 / 794
页数：6
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