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Synthesis of metal‐containing carbohydrate polymers employing crown ether phase transfer catalyzed interfacial condensation
Author(s) -
Naoshima Y,
Carraher C E,
Iwamoto S,
Shudot H
Publication year - 1987
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.590010306
Subject(s) - chemistry , triethylamine , sodium hydroxide , catalysis , polymer chemistry , ether , hydroxide , polymer , phase (matter) , crown ether , metal , organic chemistry , inorganic chemistry , ion
Phase transfer catalyzed interfacial reaction of the polysaccharide dextran (C 6 H 10 O 5 ) n with organotitanium and organotin dichlorides to form metal‐containing carbohydrate polymers has been carried out in the presence of two bases, sodium hydroxide and triethylamine. Interfacial systems employing sodium hydroxide with a crown ether phase transfer catalyst (PTC) gave generally greater yields compared with the analogous systems without a PTC. The trend of maximum yield for triethylamine systems with organotin dichloride not containing a PTC was different from that observed for the sodium hydroxide systems without a PTC, probably because of the ability of triethylamine to act as a PTC.