Regioselective synthesis of 6H-pyrano[3,2-e]pyrimidine-2,4-dione

被引：16
作者：
Majumdar, KC
Das, U
机构：
[1] Department of Chemistry, University of Kalyani, Kalyani 741235, West Bengal
来源：
SYNTHETIC COMMUNICATIONS | 1997年 / 27卷 / 22期
关键词：
D O I：
10.1080/00397919708005924
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
7-Aryloxymethyl-1,3-dimethyl-6H-pyrano[3,2-e]pyrimidine-2,4-diones(4a-f) were synthesized in 88-92% yields (isolated) by the regioselectively thermal [3s, 3s] sigmatropic rearrangement of 1,3-dimethyl-5-(1 -aryloxybut-2-ynyloxy)pyrimidine-2,4-diones, (3a-f) in refluxing chlorobenzene (purified) for 2-4 h.
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页码：4013 / 4019
页数：7
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