Abstract 4,6-O-Ethylidene-N-(2-hydroxybenzylidene)-β- d -glucopyranosylamine has been reacted with ytterbium(III) acetate and the resultant complex has been used as catalyst in the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones (DHPMs). Twenty-one DHPMs have been synthesised under neat reaction condition in appreciable yields (73–96%) and reusability of the catalyst has been established.
摘要 4,6-O-亚乙基-N-(2-羟基亚苄基)-β-d-
吡喃
葡萄糖胺与
乙酸镱(III)反应,所得配合物用作催化剂合成3,4-二氢
嘧啶- 2(1H)-酮/
硫酮 (
DHPM)。在纯反应条件下以可观的产率(73-96%)合成了 21 种
DHPM,并且已经建立了催化剂的可重复使用性。