Preparation of syn-Tertiary Homoallylic Alcohols Utilizing Allenyltitanocenes Generated by Reductive Titanation of gamma-Trimethylsilylpropargylic Carbonates

[摘要]：syn-Tertiary homoallylic alcohols were obtained by: the reaction of alpha-silylallenyltitanocenes generated by the reductive titanation of gamma-silylpropargylic carbonates with Cp2Ti[P(OEt)(3)](2) with ketones and following desilylation and partial hydrogenation. High diastereoselectivity was observed when aromatic and alpha,beta-unsaturated ketones were employed.

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