• efficient synthesis of e-1,2-bis(silyl)ethenes via ruthenium-catalyzed homocoupling of vinylsilanes carried out in ionic liquids

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 901
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a series of ruthenium complexes (rucl3 × 3h2o, [c5h5ru(ch3cn)3]+[pf6], [rucl2(pph3)3], [ruhcl(co)(pph3)3], [ruhcl(co)(pcy3)2]) immobilized in [bmim][tf2n] were tested in homocoupling of vinylsilanes (h2cdouble bond; length as m-dashchsi(oet)3, h2cdouble bond; length as m-dashchsi(oipr)3, h2cdouble bond; length as m-dashchsi(osime3)3, h2cdouble bond; length as m-dashchsime(osime3)2, and h2cdouble bond; length as m-dashchsiph(osime3)2) performed in a biphasic system. the highest catalytic activity and selectivity of homocoupling product was observed for [ruhcl(co)(pcy3)2]. the complex [ruhcl(co)(pcy3)2] immobilized in a variety ionic liquids ([bmim][pf6], [bmim][bf4], [bmim][tf2n], [bmim][tfo], [bmim][hso4], [bmim][cl], [trimim][meso4], [nbu3me][meso4], [pbu4][cl], [bpy][pf6], [bpy][bf4], [bpy][cl]) exhibits high catalytic activity in homocoupling of h2cdouble bond; length as m-dashchsime2ph, h2cdouble bond; length as m-dashchsi(oet)3 and h2cdouble bond; length as m-dashchsime(osime3)2and enables high-yield stereoselective synthesis of the corresponding e-1,2-bis(silyl)ethenes. the immobilized complex can be easily recycled up to 12 times in the homocoupling of h2cdouble bond; length as m-dashchsime2ph and up to 10 times in the homocoupling of h2cdouble bond; length as m-dashchsime(osime3)2 without a significant drop in activity and selectivity. results of a split test indicate that the source of catalytic activity is the catalyst immobilized in ionic liquid phase.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها