Ming, Jialin Hayashi, Tamio Rhodium-Catalyzed Arylzincation of Alkynes: Ligand Control of 1,4‑Migration Selectivity The addition of arylzinc reagents ArZnCl <b>1</b> to alkynes <b>2</b> was found to be catalyzed by rhodium complexes in the presence of a catalytic amount of zinc chloride. The selectivity in giving 2-arylalkenylzinc species <b>3</b> or <i>ortho</i>-alkenylarylzinc species <b>4</b>, the latter of which is generated through 1,4-Rh migration from alkenyl to aryl in the catalytic cycle, is controlled by the ligands on rhodium. Ligands cod and binap gave <b>3</b> and <b>4</b>, respectively, with high selectivity. rhodium complexes;arylzinc reagents ArZnCl 1;zinc chloride;migration;ligand;presence;Rhodium-Catalyzed Arylzincation;binap;Alkyne;2- arylalkenylzinc species 3;Ligands cod;selectivity;Ligand Control;Selectivity;ortho;Migration;alkynes 2;alkenylarylzinc species 4;latter 2018-09-20
    https://acs.figshare.com/articles/journal_contribution/Rhodium-Catalyzed_Arylzincation_of_Alkynes_Ligand_Control_of_1_4_Migration_Selectivity/7111202
10.1021/acs.orglett.8b02668.s001