MgBr₂-promoted enantioselective aryl addition of ArTi(OⁱPr)₃ to ketones catalyzed by a titanium(iv) catalyst of N,N′-sulfonylated (1R,2R)-cyclohexane-1,2-diamine
2015
Shu, Chao-Chi | Zhou, Shuangliu | Gau, Han-Mou
MgBr₂-promoted asymmetric addition of ArTi(OⁱPr)₃ to ketones catalyzed 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 good to excellent enantioselectivities of up to 95% ee.
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