Enantioenriched Bifunctional Crotylsilanes for the Asymmetric Synthesis of Orthogonally Protected 2-Methyl-1,3-diols
作者:Dongeun Kim、Jae Seung Lee、Lucia Lozano、Suk Bin Kong、Hyunsoo Han
DOI:10.1021/ol4026167
日期:2013.10.4
Enantiomerically pure α-substituted crotylsilane reagents I and ent-I undergo asymmetric aldehyde crotylation followed by Ir(I)-catalyzed diastereoselective allylic etherification to give a variety of orthogonally protected 2-methyl-1,3-diols at the synthetically useful level of yields and stereoselectivity. The reagents are air-stable and bifunctional so that they can be used in these reactions sequentially