Aminonitrile and cyanohydrin ethers as benzoyl anion equivalents in conjugate additions to substituted α cyclenones : comparative synthetic potentialities
Lithiated aminonitrile and cyanohydrin ether are good nucleophilic benzoyl equivalents in conjugate addition to α cyclenones. is more sensitive to β substitution of the cyclenone than , as in THF it does not react with 3-methyl substituted cyclohexenones , . From 2-methyl and 2-fluorocyclenones and or , 2-subsyituted 3-benzoylcyclanones are stereoselectively obtained, provided that mild unmasking conditions
Photoredox‐Catalyzed Isomerization of Highly Substituted Allylic Alcohols by C−H Bond Activation
作者:Kai Guo、Zhongchao Zhang、Anding Li、Yuanhe Li、Jun Huang、Zhen Yang
DOI:10.1002/anie.202000743
日期:2020.7.6
Photoredox‐catalyzed isomerization of γ‐carbonyl‐substituted allylicalcohols to their corresponding carbonyl compounds was achieved for the first time by C−H bond activation. This catalytic redox‐neutral process resulted in the synthesis of 1,4‐dicarbonyl compounds. Notably, allylicalcohols bearing tetrasubstituted olefins can also be transformed into their corresponding carbonyl compounds. Density
Addition conjuguee d'aminonitriles, equivalents de benzoyle, aux cyclenones. Quelques exemples de syntheses stereoselectives de cyclanones 2,3-disubstituees .