Chromium(II) chloride-mediated coupling reactions of Garner aldehyde with allyl bromides: facile asymmetric synthesis of (2R,3S)-3-hydroxy-2-hydroxymethylpyrrolidine
Y. Aoyagi et al., Chromium(II) chloride-mediated coupling reactions of Garner aldehyde with allyl bromides: facile asymmetric synthesis of (2R,3S)-3-hydroxy-2-hydroxymethylpyrrolidine, J CHEM S P1, (23), 1998, pp. 3975-3978
Chromium(II) chloride-mediated coupling reactions of 1,1-dimethylethyl (S)-
and (R)-4-formyl-2,2-dimethyloxazolidine-3-carboxylates [(S)- and (R)-Garn
er aldehydes] (1a,b) with allyl bromides 2a-c proceeded with moderate to go
od stereoselectivity to give the corresponding homoallyl alcohols 3a-d in g
ood yields. The homoallyl alcohol 3b was easily transformed to (2R,3S)-3-hy
droxy-2-hydroxymethylpyrrolidine 8.