SN2′ Alkylation of Cyclopropanols via Homoenolates
作者:Pragna Pratic Das、Ken Belmore、Jin Kun Cha
DOI:10.1002/anie.201205190
日期:2012.9.17
Reining in reactivity: Stereoselective SN2′ alkylation of cyclopropanols has been devised under the control of mixed zinc/copper reagents. This method provides convenient access to enantiopure keto homoenolates which react with electrophiles (El+) to form CC bonds. M=metal.
增强反应活性:在混合锌/铜试剂的控制下,设计了环丙醇的立体选择性S N 2'烷基化反应。此方法提供了对映体纯的酮homoenolates其与亲电致发光(EL反应方便地访问+)形成C C键。M =金属。
Reductive cyclization of enones by titanium(IV) aryloxide and a Grignard reagent
作者:Long Guo Quan、Jin Kun Cha
DOI:10.1016/s0040-4039(01)01868-8
日期:2001.12
The titanium-mediated cyclization of δ,ε-enones by using dichlorotitanium diphenoxide–cyclohexylmagnesium chloride diastereoselectively afforded cis-substituted cyclopentanols and was thus found to parallel the stoichiometric and catalytic titanocene-mediated reactions.