کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1328145 977539 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Easy synthesis of heterocyclic carbene complexes by activation of chalcogenopyrones and benzopyrones to pyrylium salts and subsequent addition of carbanion of methoxy(methyl)pentacarbonyltungsten carbene complex
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Easy synthesis of heterocyclic carbene complexes by activation of chalcogenopyrones and benzopyrones to pyrylium salts and subsequent addition of carbanion of methoxy(methyl)pentacarbonyltungsten carbene complex
چکیده انگلیسی

Methylenechalcogenopyran and benzopyran Fischer carbene complexes are easily obtained from commercially available chalcogenopyrones or benzopyrones and carbanion of methoxy(methyl)carbene tungsten complex. The key of the heterocyclic carbene formation is the activation of the carbonyl group by alkylation with alkyl trifluoromethanesulfonate reagent.

Methylenechalcogenopyran and benzopyran Fischer carbene complexes are obtained from commercially available chalcogenopyrones and benzopyrones and carbanion of methoxy(methyl)pentacarbonyl tungsten carbene complex. Activation of the carbonyl group by CH3SO3CF3 is the key of the carbene formation.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 692, Issue 24, 15 November 2007, Pages 5517–5522
نویسندگان
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