1449013-75-5Relevant academic research and scientific papers
Construction of quaternary carbon centers by using substitution of γ,γ-disubstituted secondary allylic picolinates with alkylcopper reagents
Feng, Chao,Kaneko, Yuki,Kobayashi, Yuichi
, p. 4629 - 4632 (2013/08/23)
ZnI2 was found to promote regio- and stereoselective substitution of γ,γ-disubstituted secondary allylic picolinates with alkylcopper reagents derived from alkyl-MgBr and CuBr·Me2S in a 2:1 ratio to furnish quaternary carbon centers in good yields. Alkyl groups delivered efficiently were the primary, secondary, and benzyl classes such as Me, Et, Bu, C16H33, Ph(CH2)2, Ph(CH2)3, c-C6H11, and Bn. As an application, allylic picolinates with the (E)- or (Z)-olefin afforded quaternary carbon centers that are the enantiomers of each other.
