1.
Chem Commun (Camb)
; (16): 2175-7, 2005 Apr 28.
Article
in English
| MEDLINE
| ID: mdl-15846438
ABSTRACT
Suzuki cross-coupling reactions are effected in both conventional organic solvents, under continuous flow conditions at 70 degree C, and in batch mode in supercritical carbon dioxide (scCO2), at temperatures as low as 40 degrees C in the presence of palladium(II) acetate microencapsulated in polyurea [PdEnCat] and tetra-n-butylammonium salts.
Subject(s)
Acetates/chemistry , Biphenyl Compounds/chemical synthesis , Organometallic Compounds/chemistry , Polymers/chemistry , Quaternary Ammonium Compounds/chemistry , Biphenyl Compounds/chemistry , Carbon Dioxide/chemistry , Catalysis , Molecular Structure , Salts/chemistry , Temperature
2.
Chem Commun (Camb)
; (22): 2622-3, 2004 Nov 21.
Article
in English
| MEDLINE
| ID: mdl-15543310
ABSTRACT
The regioselectivity of dipolar cycloadditions of mesitonitrile oxide to various dipolarophiles in supercritical carbon dioxide can be tuned by changes in density, the magnesium bromide-mediated cycloaddition to pent-1-en-3-ol proceeding with higher stereoselectivity than in most conventional solvents.