On September 5, 2022, Zhang, Yan-Dong; Li, Xiao-Yu; Mo, Qian-Kun; Shi, Wen-Bin; Zhao, Jia-Bao; Zhu, Shou-Fei published an article.HPLC of Formula: 2567-29-5 The title of the article was Highly Regioselective Cobalt-Catalyzed Hydroboration of Internal Alkynes. And the article contained the following:
Herein, we report the development of new Co complexes that have cyclopropane-based diphosphine ligands and can catalyze highly chemo-, regio-, and stereoselective hydroboration reactions of unsym. internal alkynes. These reactions exhibited unusual regioselectivity: specifically, reactions of aryl alkyl internal alkynes showed excellent cis-β-addition selectivity, and reactions of dialkyl internal alkynes gave excellent cis-α-addition selectivity. Highly regioselective hydroboration of unsym. dialkyl internal alkynes cannot be achieved by other known methods. The reactions described herein are highly synthetically useful, particularly for the stereoselective synthesis of trisubstituted alkenylborates and alkenes. Mechanistic studies indicate that a CoI-H species is a plausible active catalyst and the rigid structure of the cyclopropane skeleton of the ligands and the crowded reaction pocket were responsible for the unprecedented regioselectivity. The experimental process involved the reaction of 4-(Bromomethyl)-1,1′-biphenyl(cas: 2567-29-5).HPLC of Formula: 2567-29-5
The Article related to regioselective stereoselective cobalt catalyst hydroboration internal alkyne dft mechanism, cobalt cyclopropanediphosphine complex preparation catalyst regioselective hydroboration internal alkyne, crystal structure mol cobalt cyclopropane diphosphine complex preparation, alkenylborates, cobalt catalysis, diphosphine ligands, hydroboration, internal alkynes and other aspects.HPLC of Formula: 2567-29-5
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary