β-unsaturated ketones are described. The catalyst system of silicon tetrachloride activated by chiral bisphosphoramide (R,R)-1 effectively promotes the addition of both γ-substituted and unsubstituted silyl dienol ethers to a variety of aldehydes with exclusive γ-regioselectivity and good to excellent diastereo- and enantioselectivity.
描述了衍生自简单 α,β-不饱和酮的甲
硅烷基二烯醇醚的高度区域选择性
乙烯基醛醇加成。由手性双
磷酰胺 (R,R)-1 活化的
四氯化硅催化剂体系有效地促进了 γ-取代和未取代的甲
硅烷基二烯醇醚与各种醛的加成,具有独特的 γ-区域选择性和良好至优异的非对映选择性和对映选择性。