Abstract
Intermolecular catalytic hydroaminoalkylation of unactivated alkene occurs with silica-supported azazirconacyclopropane [ Si-O-Zr(HNMe2)(eta(2)-NMeCH2)(NMe2)]. Mechanistic studies were conducted using surface organometallic chemistry (SOMC) concepts to identify the key surface intermediates. The azametallacyclopentene intermediate { Si-O-Zr(HNMe2)[eta(2)-NMeCH2CH(Me)CH2](NMe2)} was isolated after treating with 1-propylene and characterized by FTIR spectroscopy, elemental analysis, H-1 C-13 HETCOR, DARR SS-NMR and DQ TQ SS-NMR. The regeneration of the catalyst was conducted by dimethylamine protonolysis to yield the pure amine.