Co(iii)(salen)-catalyzed HKR of two stereocentered alkoxy- and azido epoxides: a concise enantioselective synthesis of (S,S)-reboxetine and (+)-epi-cytoxazone
(2<i>S</i>,3<i>R</i>)-2-Benzyloxy-3,4-epoxybutan-1-ol, A Versatile Synthetic Building Block Formally Derived From (<i>u</i>)-Tartaric acid
作者:Geo Adam、Dieter Seebach
DOI:10.1055/s-1988-27577
日期:——
The title chiral C4-building block2 1, a meso-tartaric acid synthon, is prepared from dimethyl (R,R)-O,O′-benzylidenetartrate on a multigram scale. The key step is a tosylation- reduction sequence which leads to the diol 5.