Structural effects in solvolytic reactions. 17. Solvolysis of 1-aryl-1-cyclopropyl-1-ethyl p-nitrobenzoates. Major increases in electron supply by the cyclopropyl group with increasing electron demand at the cationic center. Effect of substituents on the cyclopropane ring
作者:Herbert C. Brown、Edward N. Peters、M. Ravindranathan
DOI:10.1021/ja00444a031
日期:1977.1
Added-Metal-Free Catalytic Nucleophilic Addition of Grignard Reagents to Ketones
作者:Hua Zong、Huayin Huang、Junfeng Liu、Guangling Bian、Ling Song
DOI:10.1021/jo3004277
日期:2012.5.18
reagents to the side of dimeric Grignardreagents to favor the additions of Grignardreagents to ketones via a favored six-membered transition state to form the desired tertiary alcohols, and DGDE should increase the nucleophilic reactivities of Grignardreagents by coordination. This catalytic system has been applied in the efficient synthesis of Citalopram, an effective U.S. FDA-approved antidepressant
NMR isotope shifts as a probe of a rapid nondegenerate equilibrium in 2-aryl-3-methyl-2-butyl cations
作者:David A. Forsyth、Yi Pan
DOI:10.1016/s0040-4039(01)80836-4
日期:1985.1
EquilibriumNMRisotopeshifts can be detected for nondegenerate equilibria by comparison with intrinsicshifts in static model compounds. Such equilibriumshifts are smaller than in similar nondegenerate equilibria.