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Dimethylaminoethylated hydroxypropyl‐chitosan: Preparation and application as polymeric ligand to form Rh 6 cluster complexes for the reduction of benzaldehyde and nitrobenzene
Author(s) -
Zhu Hong,
Mizugaki Tomoo,
Ebitani Kohki,
Kaneda Kiyotomi
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20010418)80:3<447::aid-app1118>3.0.co;2-y
Subject(s) - benzaldehyde , nitrobenzene , chitosan , chemistry , polymer chemistry , propylene oxide , derivative (finance) , sodium hydroxide , solvent , nuclear chemistry , organic chemistry , polymer , copolymer , catalysis , economics , financial economics , ethylene oxide
Hydroxypropyl chitosan and its dimethylaminoethylated derivative were prepared in different conditions. Experimental results indicated that the degree of substitution (DS) of hydroxypropyl chitosan was strongly related to the molar ratio of propylene oxide to the glucosamine unit of chitosan, the used solvent, the reaction temperature and the amount of sodium hydroxide. Moreover, the obtained hydroxypropyl chitosan could be effectively dimethylaminoethylated by the reaction with dimethylaminoethyl chloride in the presence of NaH under DMAC solution. By the combination of dimethylaminoethylated hydroxypropyl chitosan and Rh 6 (CO) 16 , benzaldehyde and nitrobenzene could be converted into correspondingly reductive products in high yields under the WGSR condition. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 447–453, 2001