PMID- 22996795
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20130314
LR  - 20121022
IS  - 1521-3765 (Electronic)
IS  - 0947-6539 (Linking)
VI  - 18
IP  - 44
DP  - 2012 Oct 29
TI  - Synthesis of end-functionalized polyacetylenes that contain polar groups by 
      employing well-defined palladium catalysts.
PG  - 14085-93
LID - 10.1002/chem.201202256 [doi]
AB  - A series of [(dppf)PdBr(R)]-type complexes 
      (dppf=1,1'-bis(diphenylphosphino)ferrocene; R=p-cyanophenyl (1 a), 
      o-hydroxymethylphenyl (1 b), and triphenylvinyl (1 c)), in combination with 
      silver trifluoromethanesulfonate (AgOTf), were demonstrated to be active for the 
      polymerization of monosubstituted polar acetylene monomers HC identical withCCONHC(4)H(9) (2), 
      HC identical withCCO(2)C(8)H(17) (3), HC identical withCCH(2)OCONHC(6)H(13) (4), HC identical withCCH(2)OCO(2)C(6)H(13) 
      (5), and HC identical withCCH(CH(3))OH (6). The yields and molecular weights of the polymers 
      depended on the combination of the Pd catalyst and monomer that was employed. 
      Matrix-assisted laser-desorption/ionization-time of flight (MALDI-TOF) mass 
      spectrometric analysis indicated the formation of polymers that contained the "R" 
      and "H" groups at the chain ends. IR spectroscopic analysis supported the 
      R-end-functionalization of the polymers. NMR spectroscopy and MS identified the 
      presence of species that were formed by single, double, and triple insertion of 
      the monomers into the Pd-C(6)H(4)-p-CN bond, thereby giving solid evidence for an 
      insertion mechanism for the present system. Density functional theory (DFT) 
      calculations suggested the preference for 1,2-insertion of the monomer compared 
      to 2,1-insertion.
CI  - Copyright (c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
FAU - Rodriguez Castanon, Jesus
AU  - Rodriguez Castanon J
AD  - Department of Polymer Chemistry, Graduate School of Engineering, Kyoto 
      University, Katsura Campus, Nishikyo-ku, Japan.
FAU - Kuwata, Keiko
AU  - Kuwata K
FAU - Shiotsuki, Masashi
AU  - Shiotsuki M
FAU - Sanda, Fumio
AU  - Sanda F
LA  - eng
PT  - Journal Article
DEP - 20120920
PL  - Germany
TA  - Chemistry
JT  - Chemistry (Weinheim an der Bergstrasse, Germany)
JID - 9513783
EDAT- 2012/09/22 06:00
MHDA- 2012/09/22 06:01
CRDT- 2012/09/22 06:00
PHST- 2012/06/26 00:00 [received]
PHST- 2012/09/22 06:00 [entrez]
PHST- 2012/09/22 06:00 [pubmed]
PHST- 2012/09/22 06:01 [medline]
AID - 10.1002/chem.201202256 [doi]
PST - ppublish
SO  - Chemistry. 2012 Oct 29;18(44):14085-93. doi: 10.1002/chem.201202256. Epub 2012 
      Sep 20.