MgBr 2促进ArTi(O i Pr)3的对映体选择性芳基加成到N,N'-磺酰化(1 R,2 R)-环己烷-1,2-二胺†的钛(iv)催化剂上的酮中
摘要:
据报道,MgBr 2促进了N,N'-磺酰化(1 R,2 R)-环己烷-1,2-二胺的钛催化剂催化的酮类化合物向酮中不对称地添加ArTi(O i Pr)3,结果表明:具有吸电子基团的手性N,N'-磺酰化环己烷-1,2-二胺可以有效催化不对称地将ArTi(O i Pr)3加到酮上,以高收率提供所需的叔醇,并具有良好的对映选择性。到95%ee。
Highly Enantioselective Catalytic Phenylation of Ketones with a Constrained Geometry Titanium Catalyst
作者:Celina García、Patrick J. Walsh
DOI:10.1021/ol0352963
日期:2003.10.1
[reaction: see text] The catalytic asymmetric addition of phenyl groups from diphenylzinc to ketones is reported. The catalyst, generated from a dihydroxy bis(sulfonamide) ligand and titanium tetraisopropoxide, gives good to excellent enantioselectivities with a range of substrates.
Highly Enantioselective Aryl Additions of [AlAr3(thf)] to Ketones Catalyzed by a Titanium(IV) Catalyst of (S)-Binol
作者:Chien-An Chen、Kuo-Hui Wu、Han-Mou Gau
DOI:10.1002/anie.200701201
日期:2007.7.9
MgBr<sub>2</sub>-promoted enantioselective aryl addition of ArTi(O<sup>i</sup>Pr)<sub>3</sub> to ketones catalyzed by a titanium(<scp>iv</scp>) catalyst of N,N′-sulfonylated (1R,2R)-cyclohexane-1,2-diamine
作者:Chao-Chi Shu、Shuangliu Zhou、Han-Mou Gau
DOI:10.1039/c5ra18871g
日期:——
MgBr2-promoted asymmetric addition of ArTi(OiPr)3 to ketonescatalyzed by a titanium catalyst of N,N′-sulfonylated (1R,2R)-cyclohexane-1,2-diamines is reported, and results showed that the chiral N,N′-sulfonylated cyclohexane-1,2-diamines with electron-withdrawing groups could effectively catalyze asymmetric addition of ArTi(OiPr)3 to ketones to afford desired tertiary alcohols in good yields with
据报道,MgBr 2促进了N,N'-磺酰化(1 R,2 R)-环己烷-1,2-二胺的钛催化剂催化的酮类化合物向酮中不对称地添加ArTi(O i Pr)3,结果表明:具有吸电子基团的手性N,N'-磺酰化环己烷-1,2-二胺可以有效催化不对称地将ArTi(O i Pr)3加到酮上,以高收率提供所需的叔醇,并具有良好的对映选择性。到95%ee。