Synthesis of 4-hydroxyquinolin-2(1<i>H</i>)-one analogues and 2-substituted quinolone derivatives
作者:Jae-Chul Jung、Young-Jo Jung、Oee-Sook Park
DOI:10.1002/jhet.5570380109
日期:2001.1
4-hydroxyquinolone and 2-substituted quinolone compounds from simple benzoic acid derivatives was demonstrated. The synthetic strategies involve the use of well known ethyl acetoacetate synthesis, malonic ester synthesis and reductive cyclization. The key intermediates were keto esters 4a-e, which could be transformed to 4-hydroxyquinolones 5a,b or 2-substituted quinolone ethyl esters 6a-c depending on the
Nitrobenzoyl-3-cyclopropylaminoacrylates and a process for the
申请人:Korea Advanced Institute of Science and Technology
公开号:US04965396A1
公开(公告)日:1990-10-23
Nitrobenzoyl-3-cyclopropylaminoacrylates are prepared by two stage reaction: (a) The first stage is the synthesis of nitrobenzoyl-3-alkoxyacrylates from nitrobenzoylester compound and alkylorthoformate in organic acid solvent. (b) The second stage is the synthesis of nitrobenzoyl-3-cyclo propylamino acrylate from nitrobenzoyl-3-alkoxyacrylates and cyclopropylamine.