A facile synthesis of angularly-fused 3,4,4a,10b-tetrahydro-2H,5H-pyrano[3,2-c][1]benzopyrans by the one-pot condensation between salicylaldehydes and unsaturated alcohols

被引：32

作者：

Inoue, S

Asami, M

Honda, K

Miyazaki, H

机构：

[1] Department of Synthetic Chemistry, Faculty of Engineering, Yokohama National University, Yokohama 240, Tokiwadai 156, Hodogaya-ku

来源：

CHEMISTRY LETTERS | 1996年 / 10期

关键词：

D O I：

10.1246/cl.1996.889

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Salicylaldehydes reacted with 5-methyl-4-hexen-1-ol (4a) or 6-methyl-5-hepten-2-ol (4b) in benzene in the presence of trimethyl orthoformate and a catalytic amount of p-toluenesulfonic acid at rt to give angularly-fused trans-5,5-dimethyl-3,4,4a,10b-tetrahydro-2H,5H-pyrano[3,2-c][1]benzopyrans (6) in high yields with complete stereoselectivity.

引用

页码：889 / 890

页数：2

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