Reactions of 3-(2-Methyl-1,3-dioxolan-2-yl)tropolone Methyl Ethers with Hydrazines, Thiourea, Guanidine, and Amidines
作者:Kimiaki Imafuku、Yosuke Kikuchi、Bing-Zhu Yin
DOI:10.1246/bcsj.60.185
日期:1987.1
8-ones. Another methyl ether 3b reacted with hydrazine to afford 2-hydrazino-7-(2-methyl-1,3-dioxolan-2-yl)tropone, while the reaction with methylhydrazine gave 2-(2-methyl-1,3-dioxolan-2-yl)-7-(2-methylhydrazino)tropone, 2-(2-methyl-1,3-dioxolan-2-yl)-7-(1-methylhydrazino)tropone, and 1,3-dimethyl-8-methylhydrazono-1,8-dihydrocycloheptapyrazole. On the other hand, the methyl ether 3a reacted with
3-(2-Methyl-1,3-dioxolan-2-yl)tropolone,由 3-acetyltropolone 制备,用重氮甲烷甲基化得到 2-methyl-3-(2-methyl-1,3-dioxolan-2-基) 托酮 (3a) 和 2-甲氧基-7-(2-甲基-1,3-二氧戊环-2-基) 托酮 (3b)。甲醚 3a 与肼反应得到 2-hydrazono-3-(2-methyl-1,3-dioxolan-2-yl)-3,5-cycloheptadien-1-one 和 3-methyl-1,8-dihydrocycloheptapyrazol -8-一个。与甲基肼反应得到 3-(2-methyl-1,3-dioxolan-2-yl)-2-methylhydrazono-3,5-cycloheptadien-1-one 和 1,3-和 2,3-二甲基-dihydrocycloheptapyrazol-