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MICHAEL ADDITION OF NITROALKANE TO α,β-UNSATURATED CARBONYL COMPOUNDS ON KF / Al_2O_3/ PEG4000 被引量:2
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作者 Lian An L1AO’ Qi Zhen GUO Bang Ji LI Xiao Yia WU Dept. of Chem., Xiamen Univ, Fujian 361005 《Chinese Chemical Letters》 SCIE CAS CSCD 1992年第3期159-160,共2页
Michael addition of nitroalkanes to α,β-unsaturated carbonyl compounds occurs in the presence of KF/AI_2O_3/PEG4000 without solvent.Yields are fair to good and work-ups are easy.
关键词 unsaturated CARBONYL compoundS ON KF MICHAEL ADDITION OF NITROALKANE TO AL2O3 PEG4000
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Addition of Per(poly)fluoroalkyl Iodides to vinyl Cyclopropane Derivatives: Synthesis of Fluoroalkyl Substituted γ,δ-Unsaturated Carbonyl Compounds
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作者 Qiao Sheng HU and Chang Ming HU(Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry, Chinese Academy ofSciences, 354 Fengling Lu, Shanghai, 200032) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第7期565-568,共4页
In the presence of CrC13 /Fe bimetal couple,per(poly)fluoroalkyl iodides add to vinyl cyclopropane compounds giving addition-ring-opening products in good yields.
关键词 Addition of Per poly)fluoroalkyl Iodides to vinyl Cyclopropane Derivatives Synthesis of Fluoroalkyl Substituted unsaturated Carbonyl compounds ppm CF
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Selectivity of Organosamarium(Ⅲ) Hydride in Reducing Unsaturated Carbonyl Compounds
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作者 YUEZheng-yu GAOTing XIEXiao-min SUNHong-yan GAOJin-sheng YANPeng-fei 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2004年第3期308-310,共3页
The selectivity of organosamarium(Ⅲ) hydride in reducing unsaturated carbonyl compounds has been studied. Dimeric organosamarium hydride[(C_9H_7)_2SmH]_2·4THF·NaCl prepared by the reaction of (C_9H_7)_2SmCl... The selectivity of organosamarium(Ⅲ) hydride in reducing unsaturated carbonyl compounds has been studied. Dimeric organosamarium hydride[(C_9H_7)_2SmH]_2·4THF·NaCl prepared by the reaction of (C_9H_7)_2SmCl·2THF with NaH in THF reacts with unsaturated carbonyl compounds to give the corresponding reduction products with a high selectivity. The carbonyl groups have been reduced while the carbon-carbon double bonds are not affected. 展开更多
关键词 Organosamarium(Ⅲ) hydride unsaturated carbonyl compound Selective reduction
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Solid-phase Synthesis of Unsaturated β-Dicarbonyl Compounds from Polymer-supported 4-(Phenylseleno)morpholine
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作者 Xiao Ling LIU Xing Cong WANG +1 位作者 Shou Ri SHENG Xian HUANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2004年第9期1009-1010,共2页
The solid-phase synthesis of unsaturated ?dicarbonyl compounds has been reported.
关键词 Solid phase organic synthesis 4-(phenylseleno)morpholine α-formylcycloanone unsaturated β-dicarbonyl compound.
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Engineering electrophilic atomic Ir sites on CeO_(2) colloidal spheres for selectivity control in hydrogenation of α,β-unsaturated carbonyl compounds 被引量:2
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作者 Muhammad Mateen Muhammad Nadeem Akhtar +4 位作者 Ling Gao Weng-Chon(Max)CHEONG Shanshan Lv Yan Zhou Zheng Chen 《Nano Research》 SCIE EI CSCD 2022年第8期7107-7115,共9页
Selective hydrogenation of the carbonyl bond inα,β-unsaturated carbonyl compounds is rather challenging owing to the more feasible hydrogenation of ethylenic bond from both thermodynamic and kinetic aspects.Here,we ... Selective hydrogenation of the carbonyl bond inα,β-unsaturated carbonyl compounds is rather challenging owing to the more feasible hydrogenation of ethylenic bond from both thermodynamic and kinetic aspects.Here,we demonstrate a facile emulsionbased molecule-nanoparticle self-assembly strategy for the atomic engineering of Ir species on three-dimensional CeO_(2)spheres(Ir1@CeO_(2)).When applied to the hydrogenation ofα,β-unsaturated aldehydes,Ir1@CeO_(2)catalyst remarkably exhibited~100%selectivity towards unsaturated alcohols,whereas the formation of Ir nanoparticles on CeO_(2)drastically decreased the selectivity for unsaturated alcohols.Spectroscopic studies revealed that strong metal-support interactions triggered the charge transfer from Ir to CeO_(2),leading to the partial reduction of Ce^(4+)to Ce^(3+)along with the formation new Ir^(δ+)-O_(2)--Ce^(3+)(OV)interfaces.The electrophilic atomic Ir species at the Ir^(δ+)-O_(2)--Ce^(3+)(OV)interfaces would therefore preferentially adsorb and facilitate hydrogenation of polar C=O bond to achieve exceptional selectivity. 展开更多
关键词 unsaturated carbonyl compounds CERIA colloidal spheres single atom catalyst self-assembly HYDROGENATION
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