Journal of Organic Chemistry p. 2880 - 2888 (1993)
Update date:2022-08-10
Topics:
Mathre, David J.
Thompson, Andrew S.
Douglas, Alan W.
Hoogsteen, Karst
Caroll, James D.
et al.
A practical, large-scale process for the preparation of tetrahydro-1-methyl-3,3-diphenyl-1H,3H-pyrrolo<1,2-c><1,3,2>oxazaborole-borane is reported.The title compound is a stable, free-flowing crystalline solid useful either stoichiometrically or catalytically for the enantioselective reduction of prochiral ketones.When used stoichiometrically to reduce acetophenone the enantioselectivity is >= 99.8 percent ee.
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