Synthesis of 6-Aryltetrahydropyran-2,4-diones Containing Tetra- and Pentamethylene Substituents in the 3 and 5 Positions of the Heteroring
作者:V. V. Shchepin、N. F. Kirillov、M. I. Vakhrin
DOI:10.1023/b:rugc.0000042430.44366.01
日期:2004.6
Methyl esters of 1-(1-bromocyclopentylcarbonyl)- and 1-(1-bromocyclohexylcarbonyl)cyclopentanecarboxylic or 1-(1-bromocyclopentylcarbonyl)cyclohexanecarboxylic acids react with zinc and aromatic aldehydes to form 14-aryl-13-oxadispiro[4.1.4.3]tetradecane-6,12-diones, 13-aryl-14-oxadispiro[4.1.5.3]pentadecane-6,15-diones, and 15-aryl-14-oxadispiro[4.1.5.3]pentadecane-6,13-diones, respectively.