Configuration at the 2-position of oxazolidines derived from l-ephedrine and p-bromobenzaldehyde. An x-ray structure redetermination
作者:George Just、Pierre Potvin、Peter Uggowitzer
DOI:10.1021/jo00165a027
日期:1983.8
JUST, G.;POTVIN, P.;UGGOWITZER, P.;BIRD, P., J. ORG. CHEM., 1983, 48, N 17, 2923-2924
作者:JUST, G.、POTVIN, P.、UGGOWITZER, P.、BIRD, P.
DOI:——
日期:——
Stereochemistry-60
作者:Claude Agami、Toufic Rizk
DOI:10.1016/s0040-4020(01)96496-8
日期:1985.1
controlled oxazolidineformation was observed with aromatic aldehydes substituted by electron-withdrawing groups. The stereoselectivity is solvent dependent: non-stereoselective ring closure occurred in chloroform while a high diastereodifferentiation was observed in methanol. The first oxazolidine showing an unambiguous 2R configuration was synthesized from p-bromobenzaldehyde and (-)-ephedrine in alcohol