摘要
2,2-亚基-1,3-二氧六环-4,6-二酮与原甲酸三乙酯和脲素衍生物反应,合成了六个新化合物(4a-f).在它们的IR谱图中,没有羟基的特征吸收峰,表明4a-f以分子内氢键形式存在.该类反应具有试剂安全、得率好、条件温和、操作简便等特点.
Reactions of 2, 2-pentamethylene-1, 3-dioxan-4, 6-dione with triethyl orthoformate and urea derivatives proceed smoothly to give the corresponding products(4a-f). Lack of the characteristic peak of hydroxyl group in IR of 4a-f indicatesthat the most possible structure of 4 is the intramolecular hydrogen-bondedform. The advantages are safe reagents, good yields, mild and simple operatingconditions.
出处
《上海大学学报(自然科学版)》
CAS
CSCD
1995年第1期55-58,共4页
Journal of Shanghai University:Natural Science Edition
关键词
原甲酸三乙酯
脲素
PDDO
dioxane (1
3-dioxan-4
6-dione)
triethyl orthoformate
urea(urea derivatives)