Solubility of several analogues of triphenylphosphine in carbon dioxide

被引：14
作者：
Ablan, CD
Sheppard, D
Beckman, EJ
Olmstead, MM
Jessop, PG [1 ]
机构：
[1] Univ Calif Davis, Dept Chem, Davis, CA 95616 USA
[2] Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA
[3] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
来源：
GREEN CHEMISTRY | 2005年 / 7卷 / 08期
关键词：
D O I：
10.1039/b502442k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Homogeneous catalysts often have poor solubility in supercritical CO2 (scCO(2)) because they contain aromatic ligands such as PPh3. The standard approach to this problem, adding fluorinated alkyl groups to the ligands, increases the cost and adds concerns about environmental persistence. Three fluorine-free strategies for increasing the solubility of PPh3-analogs in scCO(2) have now been tested and two more soluble ligands identified.
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收藏
页码：590 / 594
页数：5
相关论文
共 37 条
[1]   Novel class of tertiary phosphine ligands based on a phospha-adamantane framework and use in the Suzuki cross-coupling reactions of aryl halides under mild conditions [J].
Adjabeng, G ;
Brenstrum, T ;
Wilson, J ;
Frampton, C ;
Robertson, A ;
Hillhouse, J ;
McNulty, J ;
Capretta, A .
ORGANIC LETTERS, 2003, 5 (06) :953-955
[2]  
[Anonymous], SHELXTL V 5 10
[3]  
*BRUK AN XRAY INST, 2003, DAT COLL SMART V 5 0
[4]   Titanium complexes of sterically demanding cage-phosphinimide ligands [J].
Carraz, CA ;
Stephan, DW .
ORGANOMETALLICS, 2000, 19 (19) :3791-3796
[5]   PROCESS SYNTHESIS CONCEPTS FOR SUPERCRITICAL GAS EXTRACTION IN THE CROSSOVER REGION [J].
CHIMOWITZ, EH ;
PENNISI, KJ .
AICHE JOURNAL, 1986, 32 (10) :1665-1676
[6]  
CLARKE ML, 2002, 13 INT S HOM CAT TAR, P196
[7]   MODIFICATION OF SUPERCRITICAL FLUID PHASE-BEHAVIOR USING POLAR COSOLVENTS [J].
DOBBS, JM ;
WONG, JM ;
LAHIERE, RJ ;
JOHNSTON, KP .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1987, 26 (01) :56-65
[8]   INFRARED EVIDENCE FOR CO2 ELECTRON-DONOR ACCEPTOR COMPLEXES [J].
DOBROWOLSKI, JC ;
JAMROZ, MH .
JOURNAL OF MOLECULAR STRUCTURE, 1992, 275 :211-219
[9]   NOVEL PHOSPHORUS HETEROCYCLIC SYSTEM FROM REACTIONS OF PHOSPHINE AND PRIMARY PHOSPHINES WITH 2,4-PENTANEDIONE [J].
EPSTEIN, M ;
BUCKLER, SA .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1961, 83 (15) :3279-&
[10]   SIGNIFICANCE OF THE CROSSOVER PRESSURE IN SOLID SUPERCRITICAL FLUID PHASE-EQUILIBRIA [J].
FOSTER, NR ;
GURDIAL, GS ;
YUN, JSL ;
LIONG, KK ;
TILLY, KD ;
TING, SST ;
SINGH, H ;
LEE, JH .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1991, 30 (08) :1955-1964
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