کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1326134 1499953 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
N-heterocyclic carbene–palladium catalysts for the bisdiene cyclization-trapping reaction with sulfonamides under thermal and microwave conditions
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
N-heterocyclic carbene–palladium catalysts for the bisdiene cyclization-trapping reaction with sulfonamides under thermal and microwave conditions
چکیده انگلیسی

Simple palladium-N-heterocyclic carbene catalysts readily effect the palladium-catalyzed cyclization-trapping of bisdienes with sulfonamides. The reaction is quite efficient for a variety of sulfonamides and several bisdienes. For example, using 0.1% of the in situ generated or preformed (IMes)Pd(η3-C3H5)Cl complex, the cyclization-trapping of a simple bisdiene with TsN(H)CH2Ph proceeds in good yield under thermal conditions (74–75%, 75 °C, 9 h). The same reaction run under microwave irradiation proceeds somewhat faster and in even higher yield (86%, 75 °C, 2.5 h).

Simple (NHC)Pd catalysts effect the efficient cyclization-trapping of bisdienes with sulfonamides. For example, the (IMes)Pd-catalyzed (0.1%, generated in situ) cyclization-trapping of a simple bisdiene with TsN(H)CH2Ph proceeds in 86% yield upon microwave heating at 75 °C (<250 W, 2.5 h).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Organometallic Chemistry - Volume 690, Issues 24–25, 1 December 2005, Pages 6205–6209
نویسندگان
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