Premium
Rapid Screening of New Polymer‐Supported Palladium ( II ) Bis(3,4,5,6‐tetrahydropyrimidin‐2‐ylidenes)
Author(s) -
Mayr Monika,
Buchmeiser Michael R.
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300173
Subject(s) - romp , palladium , catalysis , carbene , polymer chemistry , metathesis , yield (engineering) , polymerization , chemistry , polymer , materials science , organic chemistry , composite material
Summary: The synthesis of two 1,3‐diaryl‐3,4,5,6‐tetrahydropyrimidin‐2‐ylidene‐based N ‐heterocyclic carbene‐ (NHC) derived palladium complexes, Pd(5‐hydroxy‐1,3‐bis‐(2,4,6‐trimethylphenyl)‐3,4,5,6‐tetrahydropyrimidin‐2‐ylidene) 2 2+(Ag 2 Br 2 Cl 4 ) 1/2 4−( 10 ) and Pd(5‐(bicyclo[2.2.1]hept‐5‐ene‐2‐carbonyloxy)‐1,3‐bis‐(2,4,6‐trimethylphenyl)‐3,4,5,6‐tetrahydropyrimidin‐2‐ylidene) 2 2+(Ag 2 Br 2 Cl 4 ) 1/2 4−( 11 ) is described. 10 was supported on a PS‐DVB and a Wang resin, respectively, to yield catalysts 12 and 13 , while 11 was used for the synthesis of a ring‐opening metathesis precipitation polymerization‐derived support 14 . All supports were tested for their activity in Heck‐type reactions using a combinatorial approach.Structure of polymer supported Pd‐catalysts.