Synthesis of Os Hydride Complexes Supported by the Diarylamido/Bis(phosphine) PNP Ligand and Attempts at Using (PNP)Ru and (PNP)Os Complexes in C-H Borylation Catalysis

被引：0

作者：

Castillo, Patricio ^{[1
]}

Foley, Bryan J. ^{[1
]}

Lee, Samuel R. ^{[1
]}

Mcculloch, Billy J. ^{[1
]}

Bhuvanesh, Nattamai ^{[1
]}

Ozerov, Oleg V. ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA

来源：

ORGANOMETALLICS | 2024年 / 43卷 / 22期

基金：

美国国家科学基金会;

关键词：

TERMINAL ALKYNES; DEHYDROGENATIVE BORYLATION; DIHYDROGEN COMPLEXES; COORDINATION CHEMISTRY; PINCER COMPLEXES; BOND ACTIVATION; X-RAY; N-H; OSMIUM; HYDROBORATION;

D O I：

10.1021/acs.organomet.4c00388

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This manuscript describes the synthesis of Os complexes supported by the diarylamido/bis(phosphine) PNP pincer ligand. Compound (PNP)OsH(CO) (3-Os) was prepared by analogy with the previously reported 3-Ru. However, attempts to make (PNP)OsH3 (4-Os) analogously to 4-Ru resulted in the formation of an unexpected compound (5-Os) that is a product of addition of a BH3 unit across the Os-N bond in 4-Os. Nonetheless, 4-Os was prepared via an alternative route. Unlike 4-Ru, 4-Os appears to be a classical trihydride. Compounds 3-Ru, 3-Os, 4-Os, 4-Ru, and 5-Os were tested as potential catalysts for (a) dehydrogenative borylation of terminal alkynes (DHBTA) and (b) dehydrogenative borylation of benzene. No catalytic C-H borylation was observed for any of them, but all of them catalyzed unselective hydroboration of 4-MeC6H4CCH.

引用

页码：2944 / 2950

页数：7

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