Control of Chemo-, Regio-, and Enantioselectivity in Copper Hydride Reductions of Morita-Baylis-Hillman Adducts.
Title | Control of Chemo-, Regio-, and Enantioselectivity in Copper Hydride Reductions of Morita-Baylis-Hillman Adducts. |
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Authors | Linstadt, R.T.H.; Peterson, C.A.; Jette, C.I.; Boskovic, Z.V.; Lipshutz, B.H. |
Journal | Org Lett |
DOI | 10.1021/acs.orglett.6b03464 |
Abstract |
Nonracemically ligated copper hydride can be used to effect tandem SN2'/1,2-reductions of racemic Morita-Baylis-Hillman (MBH) acetates to access enantioenriched chiral allylic alcohols with defined olefin geometry. MBH esters, including those with β-substitution, can be transformed to stereodefined enoates by taking advantage of a bulky, oligomeric, in situ generated trialkoxysiloxane leaving group. Finally, an atypical conversion of easily arrived at MBH alcohol derivatives to nonracemic allylic alcohols is disclosed. |