Rare-Earth Metal Complexes-Catalyzed Dehydropolymerization of Methylamine-Boranes

被引：1
作者：
Jiang Shengjie [1 ]
Wang Yang [1 ]
Xu Xin [1 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Key Lab Organ Synth Jiangsu Prov, Suzhou, Jiangsu 215123, Peoples R China
来源：
CHINESE JOURNAL OF ORGANIC CHEMISTRY | 2023年 / 43卷 / 05期
基金：
中国国家自然科学基金;
关键词：
rare-earth; amine-borane; dehydrogenation; polymerization; beta-hydride elimination; AMMONIA-BORANE; AMINE; POLYAMINOBORANES; DEHYDROCOUPLING/DEHYDROGENATION; H3B-CENTER-DOT-NMEH2; DERIVATIVES; ADDUCTS; SYSTEM; ALKYL;
D O I：
10.6023/cjoc202301026
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Rare-earth metal complexes-catalyzed dehydropolymerization of amine-borane was achieved. Rare-earth metallocene alkyl complexes [(C5Me4R)(2)LnR', R=Me, H; Ln=Sc, Y; R'=CH2SiMe3, CH(SiMe3)(2)] were found to be active catalysts for the dehydropolymerization of methylamine-borane (MAB), generating corresponding boron-nitrogen polymer [(MeNHBH2)(n), PMAB]. The results showed that the polymerization activity would decrease with the increase of ion radius of the metal center or the decrease of the steric hindrance of the supporting ligands. In the mechanistic study, a beta-B-agostic-type scandium amidoborane complex was successfully isolated through the stoichiometric reaction of Sc complex with MAB. Moreover, the control experiment confirmed the existence of scandium hydride species, which may be the catalytic active intermediate.
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收藏
页码：1786 / 1791
页数：6
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