The synthesis and transformations of substituted 2-hydroxy-3-dimethylaminopropenoates. The preparation of condensed 3-hydroxypyran-2-ones
摘要:
A convenient synthesis of substituted 2-hydroxy-3-dimethylaminopropenoates is reported. They react with cyclic 1,3-diketones, with aromatic and heteroaromatic hydroxy compounds to afford the corresponding 3-substituted hydroxytetrahydro-2H-1-benzopyran-2-ones, benzo- and naphthopyran-2-ones and azolo- and azinopyran-2-ones, respectively. Catalytic debenzylation of 3-benzyloxy substituted fused pyran-2-ones gives free 3-hydroxy derivatives. (C) 1998 Elsevier Science Ltd. All rights reserved.
Ornik, Brina; Stanovnik, Branko; Tisler, Miha, Journal of Heterocyclic Chemistry, 1992, vol. 29, # 5, p. 1241 - 1244
作者:Ornik, Brina、Stanovnik, Branko、Tisler, Miha
DOI:——
日期:——
US3968119A
申请人:——
公开号:US3968119A
公开(公告)日:1976-07-06
The synthesis and transformations of substituted 2-hydroxy-3-dimethylaminopropenoates. The preparation of condensed 3-hydroxypyran-2-ones
作者:Janez Smodiš、Branko Stanovnik
DOI:10.1016/s0040-4020(98)00534-1
日期:1998.8
A convenient synthesis of substituted 2-hydroxy-3-dimethylaminopropenoates is reported. They react with cyclic 1,3-diketones, with aromatic and heteroaromatic hydroxy compounds to afford the corresponding 3-substituted hydroxytetrahydro-2H-1-benzopyran-2-ones, benzo- and naphthopyran-2-ones and azolo- and azinopyran-2-ones, respectively. Catalytic debenzylation of 3-benzyloxy substituted fused pyran-2-ones gives free 3-hydroxy derivatives. (C) 1998 Elsevier Science Ltd. All rights reserved.