Single Route to Chiral <i>s</i><i>yn</i>- and <i>a</i><i>nti</i>-2-Amino-1,2-diphenylethanols via a New Stereodivergent Opening of <i>trans</i>-1,2-Diphenyloxirane
作者:Paolo Lupattelli、Carlo Bonini、Leonilde Caruso、Augusto Gambacorta
DOI:10.1021/jo034133p
日期:2003.4.1
Oxiranyl ring opening of trans-stilbene oxide gave rise to anti- or syn-2-bromo-1,2-diphenylethanols, using either MgBr(2).Et(2)O or MgBr(2).Et(2)O, NaBr, and KBr with Amberlyst 15, respectively. Starting from optically pure (R,R)-trans-stilbene oxide, (1R,2R)- and (1R,2S)-2-amino-1,2-diphenylethanols were obtained in high yield and ee.
使用MgBr(2).Et(2)O或MgBr(2).Et(2)O,反式二氧化锡的环氧乙烷基开环生成抗-或同-2-溴-1,2-二苯基乙醇。 NaBr和KBr和Amberlyst 15。从光学纯的(R,R)-反式-二苯乙烯氧化物开始,以高收率和ee获得(1R,2R)-和(1R,2S)-2-氨基-1,2-二苯基乙醇。