A NEW AND CONVENIENT PREPARATION OF CONJUGATED DIENALS

被引：14
|
作者：
YAHATA, N
FUJITA, M
OGURA, K
机构：
[1] CHIBA UNIV, FAC ENGN, DEPT SYNTHET CHEM, 1-33 YAYOICHO, CHIBA 260, JAPAN
[2] CHIBA UNIV, GRAD SCH SCI & TECHNOL, CHIBA 260, JAPAN
来源：
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1990年 / 63卷 / 12期
关键词：
D O I：
10.1246/bcsj.63.3601
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
For preparation of 5-monosubstituted or 5,5-disubstituted 2,4-dienals, 1-(methylthio)-5-(p-tolylsulfonyl)-1,3-pentadiene (4) is revealed to be an important precursor. When 5-(methylthio)-5-(p-tolylsulfonyl)-1,3-pentadiene, that is easily obtainable from (methylthio)methyl p-tolyl sulfone, was treated with silica gel, 1,5-rearrangement of p-tolylsulfonyl group occurred to give 4. The conditions for mono- or dialkylation of 4 followed by hydrolysis leading to the dienals are described.
引用
收藏
页码：3601 / 3605
页数：5
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