Asymmetric Syntheses of 2-Substituted and 2,5-Disubstituted Pyrrolidines from (3<i>S</i>,5<i>R</i>,7a<i>R</i>)-5-(Benzotriazol-1-yl)-3-phenyl[2,1-<i>b</i>]oxazolopyrrolidine
作者:Alan R. Katritzky、Xi-Lin Cui、Baozhen Yang、Peter J. Steel
DOI:10.1021/jo9821426
日期:1999.3.1
1-b]oxazolopyrrolidine (6), whose crystal structure was confirmed by X-ray crystallography. Novel chiral pyrrolidine synthon 6 reacts with organosilicon (allyltrimethylsilanes and vinyloxytrimethylsilanes), organophosphorus, organozinc, and Grignard reagents to afford chiral 2-substituted and 2,5-disubstituted pyrrolidines.
在一个步骤中,苯并三唑,2,5-二甲氧基四氢呋喃和(S)-苯基甘氨醇给出80%的(3S,5R,7aR)-5-(苯并三唑-1-基)-3-苯基-[2,1-b]恶唑烷吡咯烷(6),其晶体结构通过X射线晶体学证实。新型手性吡咯烷合成子6与有机硅(烯丙基三甲基硅烷和乙烯基氧基三甲基硅烷),有机磷,有机锌和格氏试剂反应,得到手性的2-取代的和2,5-二取代的吡咯烷。