کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1326134 | 1499953 | 2005 | 5 صفحه PDF | دانلود رایگان |

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
Journal: Journal of Organometallic Chemistry - Volume 690, Issues 24–25, 1 December 2005, Pages 6205–6209