کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1313016 975522 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exploring the utility of neutral Rh(I) and Ir(I) κ2-(P,O)MCOD catalyst complexes for the addition of triethylsilane to styrene
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Exploring the utility of neutral Rh(I) and Ir(I) κ2-(P,O)MCOD catalyst complexes for the addition of triethylsilane to styrene
چکیده انگلیسی

The ability of neutral Rh and Ir phosphinoenolate complexes of the type (COD)M(κ2-3-PiPr2-2-O-indene) (M = Rh, 2a; M = Ir, 2b; COD = η4-1,5-cyclooctadiene) to mediate the addition of triethylsilane to styrene was explored under various reaction conditions in which the solvent, temperature and substrate ratio were altered. Throughout the course of these catalytic studies, head-to-head performance comparisons were made with Wilkinson’s catalyst ((PPh3)3RhCl; 3) and Crabtree’s catalyst ([(COD)Ir(PCy3)(Py)]+PF6-; Cy = cyclohexyl; Py = pyridine; 4). While 2a proved to be an active catalyst for dehydrogenative silylation, exhibiting selectivity for E-1-triethylsilyl-2-phenylethene (5a) comparable to that of 3 under appropriate conditions, the Ir analogue 2b displayed rather poor catalytic productivity. In contrast, 4 exhibited good catalytic activity, generating 5a as well as 1-triethylsilyl-1-phenylethane (5c) as major products. Crystallographic data for 2a · 0.25CH2Cl2 are also reported.

The ability of neutral Rh and Ir phosphinoenolate complexes of the type (COD)M(κ2-3-PiPr2-2-O-indene) (M = Rh, 2a; M = Ir, 2b; COD = η4-1,5-cyclooctadiene) to mediate the addition of triethylsilane to styrene was explored under various reaction conditions, in which the solvent, temperature and substrate ratio were altered.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 359, Issue 9, 1 June 2006, Pages 2780–2785
نویسندگان
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