?-complexes of transition metals in organic synthesis. 1. cross-coupling of organotitanium compounds with allyl halides in the presence of palladium complexes
Enantioselective addition of ArTi(O<sup>i</sup>Pr)<sub>3</sub> to aldehydes catalyzed by a titanium complex of an N-sulfonylated amino alcohol
作者:Shih-Ju Chang、Shuangliu Zhou、Han-Mou Gau
DOI:10.1039/c4ra14173c
日期:——
additions of ArTi(OiPr)3 to aldehydescatalyzed by a titaniumcatalyst of N-sulfonylated aminoalcohols were reported, and results showed that the chiral N-sulfonylated aminoalcohol with two stereogenic centers could catalyze the asymmetric addition of ArTi(OiPr)3 to aldehydes to afford desired secondary alcohols in good yields with good to excellent enantioselectivities of up to 95% ee.
报道了N-磺酰化氨基醇的钛催化剂催化醛基上不对称地添加ArTi(O i Pr)3,结果表明具有两个立体中心的手性N-磺酰化氨基醇可以催化ArTi(O)的不对称加成。i Pr)3-醛,以高收率提供所需的仲醇,并具有高达95%ee的良好至优异的对映选择性。