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Polymerization of amino acid derivatives by polymer catalysts. I. Polymerization by poly-2-vinylpyridine

✍ Scribed by Kazuhiro Suzuoki; Yukio Imanishi; Toshinobu Higa-Shimura; Seizo Okamura

Publisher
Wiley (John Wiley & Sons)
Year
1969
Tongue
English
Weight
413 KB
Volume
7
Category
Article
ISSN
0006-3525

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## Abstract The polymerization of DL‐β‐phenylalanine __N__‐carboxyanhydride (NCA) initiated by poly(__N__‐benzylglycine)diethylamide (DEA) and poly(__N__‐methyl‐DL‐alanine)DEA has been investigated. As previously reported, polysarcosine DEA, poly‐__N__‐ethylglycine DEA, and poly‐__N__‐__n__‐propylg

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The polymerizations of D,L&phenylalanine NCA, p-nitro-D,L&phenylalanine NCA, and o,~nitro-D,tg-phenylslanine NCA were investigated, homopolymers and copolymers of N-vinyl-2+thylimidazole or 2-vinylpyridine being used as catalysta. When N-vinylpyrrolidone and N,N-diethylacrylamide, which are capable

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## SYNOPSIS 1 -Chloro-2-@-naphthylacetylene (ClPNA) polymerized in good yields in the presence of MoC1,-based catalysts. The highest weight-average molecular weight of poly(Cl@NA) reached about 3 X lo5. T h e polymer was a yellow solid (absorption cutoff in CHC1,450 nm). It was soluble in toluene,

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A comprehensive kinetic study of the 2-vinylpyridine living polymerization initiated by lithium derivatives in hydrocarbon solvents was carried out. Rate constants of propagation and thermodynamic parameters were determined and discussed in relation to the structure of the propagating species. I3C N