Catalytic Transfer Hydrogenation Using Biomass as Hydrogen Source
作者:Srimanta Manna、Andrey P. Antonchick
DOI:10.1002/cssc.201801770
日期:2019.7.5
entities in a fundamentally important process, such as hydrogenation. Various carbohydrates, starch, and lignin were used for stereoselective hydrogenation. Employing a transition metal catalyst and a novel catalytic system, the reduction of alkynes, alkenes, and carbonyl groups with high yields was demonstrated. The regioselective hydrogenation to access different stereoisomers was established by simple
Polyethyleneimine-Supported Triphenylphosphine and Its Use as a Highly Loaded Bifunctional Polymeric Reagent in Chromatography-Free One-Pot Wittig Reactions
作者:Patrick Toy、Xuanshu Xia
DOI:10.1055/s-0034-1380810
日期:——
rted triphenylphosphine reagent has been synthesized and used as a highly loaded bifunctional homogeneous reagent in a range of one-potWittigreactions that afforded high yields of the desired products after simple purification procedures. The approach also served efficiently in tandem reaction sequences involving a one-potWittigreaction followed by conjugate reduction of the newly formed alkene
Rasta Resin-PPh3-NBniPr2 and its Use in One-Pot Wittig Reaction Cascades
作者:Yan Teng、Jinni Lu、Patrick H. Toy
DOI:10.1002/asia.201100721
日期:2012.2.6
reagent has been prepared and used effectively in a variety of one‐pot Wittigreactions. The design of this reagent resolved a deficiency of a previously reported related material, and allowed it to perform more efficiently in such reactions. Furthermore, it was readily recyclable, and was also successfully applied in cascade processes involving one‐pot Wittigreactions followed by either a conjugate
A Diaminocyclopentadienone iron tricarbonyl complex has been applied in chemoselective hydrogen transfer reductions. This bifunctional iron complex demonstrated a broad applicability in mild conditions in various reactions, such as reduction of aldehydes over ketones, reductive alkylation of various functionalized amines with functionalized aldehydes and reduction of α,β-unsaturated ketones into the
Transition Metal Free Chemoselective Reduction of<i>α</i>,<i>β</i>-Unsaturated Ketones to Saturated Ketones Using Tosyl Hydrazide as a Hydrogen Donor
作者:Yarabally R Girish、Kanchipura R Raghavendra、Dasappa Nagaraja、Kothanahally S Sharath Kumar、Sheena Shashikanth
DOI:10.1002/cjoc.201400684
日期:2015.2
An efficient, inexpensive and simple method for the reduction of various α,β‐unsaturated ketones to corresponding saturated ketones using tosyl hydrazide as a hydrogen donor in DMF using calcium oxide powder has been reported. A variety of enones underwent reduction without forming undesirable side products. High chemoselectivity, broad functional group tolerance and good yields are the noteworthy