Enantioselective Synthesis of 3,4-Dihydropyrimidin-2(1<i>H</i>)-ones through Organocatalytic Transfer Hydrogenation of 2-Hydroxypyrimidines
作者:Fan-Jie Meng、Lei Shi、Guang-Shou Feng、Lei Sun、Yong-Gui Zhou
DOI:10.1021/acs.joc.8b03128
日期:2019.4.5
acid-catalyzed transfer hydrogenation of 2-hydroxypyrimidines has been successfully realized using Hantzsch ester or dihydrophenanthridine as the hydrogen source, furnishing the chiral 3,4-dihydropyrimidin-2(1H)-ones (DHPMs) with excellent yields and enantioselectivities of ≤99%. Notably, a novel kind of chiral DHPMs with an alkyl stereogenic center can be prepared through highly chemoselective transfer hydrogenation
以Hantzsch酯或二氢菲啶为氢源,成功地实现了2-羟基嘧啶的手性磷酸催化转移氢化,为手性3,4-二氢嘧啶-2(1 H)-one(DHPMs)提供了优异的收率和对映体选择性。 ≤99%。值得注意的是,可以通过高度化学选择性的转移氢化来制备具有烷基立体生成中心的新型手性DHPM。