An efficient hydrogenation of various alkenes using scrap automobile catalyst
摘要:
An efficient, easy, cheap, convenient, and safe procedure for the reduction of various alkenes to the corresponding alkanes is developed by using scrap automobile catalyst as an efficient hydrogenation catalyst. This procedure not only gives high yields, but also allows recycling of automobile wastes as a catalyst in organic reactions and is representative of green chemistry. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
Cobaltcarbonyl catalysed reaction of tetrahydrofurans with HSiEt2Me and CO (1 atm) took a new reaction pathway leading to enol silyl ethers when acetonitrile was employed as the solvent.
Phenyl trimethylsilyl selenide (1) reacted with tetrahydrofurans 2 in dichloromethane in the presence of a catalytic amount of zinc iodide to give ring opened silyl ethers of δ-phenylseleno alcohols 3 in good yields. It was found that well-dried zinc iodide catalyzed the reaction less effectively than moisturized zinc iodide, prepared by treatment of the reagent with water-saturated hexane.