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- W2098045452 abstract "The synthesis of polymers containing O-tert-butyl-L-serine, O-tert-butyl-DL-serine, L-serine, and DL-serine is reported. The N-benzyloxycarbonyl-(L or DL)-serine benzyl ester was used to synthesize the corresponding N-benzyloxycarbonyl-O-tert-butyl-(Lor DL)-serine benzyl ester. Catalytic hydrogenation of this material gave O-tert-butyl-(Lor DL)-serine. The reaction of O-tert-butyl-(Lor DL)-serine with phosgene produced the corresponding N-carboxyanhydrides. The kinetics of polymerization of N-carboxyanhydrides were investigated to facilitate, the preparation of block copolymers. The O-tert-butyl blocking group was removed from polymers by treatment with HCl and HBr in benzene. Both high molecular weight (water-insoluble) and low molecular weight (water-soluble) homopolymers have been prepared, as well as water-soluble block copolymers of the type (DL-serine)x (L-serine)y, (DL-serine)z." @default.
- W2098045452 created "2016-06-24" @default.
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- W2098045452 date "1968-01-01" @default.
- W2098045452 modified "2023-09-25" @default.
- W2098045452 title "Synthesis of poly-O-tert-butyl-L-serine and poly-L-serine" @default.
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- W2098045452 doi "https://doi.org/10.1002/bip.1968.360060107" @default.
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