... The Journal of ... h, Br, 4-CF 3, H, B, 0.81. i, Br, 5-NO 2, H, B, 0.82. j, Br, 5-CF 3, H, B, 0.88. Preparation of Immobilized α-(2-Halophenyl)amino-Substituted α,β-Unsaturated Esters. ... Recently, carbene and carbenoid species insertion reactions have been widely used in organic chemistry ...