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8篇 您的检索式:作者名="LEMAIRE Marc"
    题名 作者 年代 出处 被引量
1氯化咪唑基离子液体对柴油中含氮化合物选择性脱除作用研究显示文摘通过N-甲基咪唑和烷基氯的季铵化反应合成出了咪唑环N上烷基取代基碳链长度或者饱和度不同的4种离子液体:氯化1-丁基-3-甲基咪唑(BMImCl)、氯化1-烯丙基-3-甲基咪唑(AlMImCl)、氯化1-苯甲基-3-甲基咪唑(BzMImCl)和氯化-1-辛基-3-甲基咪唑(OcMImCl)。以含咔唑(CAR)和二苯并噻吩(DBT)的甲苯-正十二烷烃溶液作为模拟柴油,测定CAR和DBT在这些离子液体中的相对分配系数,考察了离子液体对氮和硫化物的萃取脱除选择性。结果表明,在这些离子液体中CAR比DBT有更高的分配系数;4种离子液体比较,BMImCl和AlMImCl对CAR的分配系数分别达46和14,对氮和硫化合物的萃取脱除选择性SN/S分别达到125和38。测定了离子液体在模拟柴油的溶解度,发现这4种离子液体在甲苯和正十二烷烃模拟柴油中的溶解度有显著的差别,其中BMImCl和AlMImCl的溶解度相当且都很小。综合结果显示BMImCl具有最佳性能。实验还比较了BMImCl对不同碱性氮杂环化合物的萃取效果,发现其对含硫化合物和碱性含氮化合物的萃取效率随着模拟柴油中甲苯的质量分数的增加而降低,而对中性含氮化合物表现出高萃取效率,且几乎不受甲苯质量分数的影响。对一种含有361 mg·kg-1N和3598 mg·kg-1S的工业柴油,BMImCl对其对中性含氮化合物的萃取效率达到38%,而对相对含量高约十倍的含硫化合物的萃取率仅约有1.7%。综合上述结果表明,氯化1-丁基-3-甲基咪唑盐离子液体对柴油中的中性含氮化合物具有高选择性脱除作用。谢莉莉 陈旬 王绪绪 付贤智 Alain Favre-Reguillon Stephane Pellet-Rostaing Marc Lemaire 2008无机化学学报2008,24,6:12
2Year in review in Intensive Care Medicine 2009: I. Pneumonia and infections, sepsis, outcome, acute renal failure and acid base, nutrition and glycaemic control显示文摘Massimo Antonelli Elie Azoulay Marc Bonten Jean Chastre Giuseppe Citerio Giorgio Conti Daniel Backer Fran?ois Lemaire Herwig Gerlach Goran Hedenstierna Michael Joannidis Duncan Macrae Jordi Mancebo Salvatore M. Maggiore Alexandre Mebazaa Jean-Charles Prei 2010Intensive Care Medicine2010,,2:1
3An environmentally benign access to carbamates and ureas显示文摘Isabelle Vauthey Frédéric Valot Christel Gozzi Fabienne Fache Marc Lemaire 2000Tetrahedron Letters2000,,33:1
4Heterogenization of a chiral bis(oxazoline) catalyst by grafting onto silica 显示文摘DALIT RECHAVI MARC LEMAIRE 2001Org Lett2001,3,16:1
5Nucleotide sequence of the CelG gene of clostridium, thermocellum and characterization of its product, endoglucanase CelG显示文摘Marc lemaire pierre beguin 1993J Bacteriol Journal of Bacteriology1993,175,11:1
6Polymer-Supported catalysts: Enantioselective hydrogenation and hydrogen transfer reduction显示文摘Christine Saluzzo Thierry Lamouille Damien Hérault Marc Lemaire 2002Bioorganic & Medicinal Chemistry Letters2002,,14:1
7Synthesis of(±)-phthalascidin 622显示文摘A synthesis of functionalized phenolic α-amino-alcohols(±)-8 and(±)-16 as synthetic precursors of the catechol tetrahydroisoquinoline structure of phthalascidin 650 was disclosed.(±)-8 was prepared in 5 steps from the commercially available sesamol.Starting from 3-methyl catechol 5,8 steps gave rise to the synthesis of phenolic α-amino-alcohol(±)-16 in 27% overall yield.This synthetic strategy involved the elaboration of fully functionalized aromatic aldehyde 13 and its transformation into a phenolic α-amino-alcohol(±)-16,through a Knoevenagel condensation,simultaneous reduction of nitroketene and ester functions,and hydrogenolysis of the benzyl protecting group.The pentacycle(±)-4 was obtained after 4 additional steps.The Pictet-Spengler cyclisation between the phenolic α-amino-alcohol(±)-16 and the N-protected α-amino-aldehyde 4 allowed to obtain(1,3')-bis-tetrahydroisoquinoline 17 with N-methylated and N-Fmoc removed.The last step was a Swern oxidation allowing the expected intramolecular condensation.CHRISTIAN R.Razafindrabe SYLVAIN Aubry BENJAMIN Bourdon MARTA Andriantsiferana STEPHANE Pellet-Rostaing MARC Lemaire 2010Science China Chemistry2010,53,9:0
8One-step selective synthesis of branched 1-O-alkyl-glycerol/diglycerol monoethers by catalytic reductive alkylation of ketones显示文摘Branched 1-O-alkyl glycerol and diglycerol monoethers were obtained in good yields and high selectivity by a straightforward catalytic reductive alkylation of glycerol with relevant ketones in the presence of 0.5 mol% of Pd/C under 10 bar of hydrogen pressure using a Brφnsted acid as the co-catalyst.DAYOUB Wissam LEMAIRE Marc 2010Science China Chemistry2010,53,9:0
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