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- W1986895367 abstract "A method for transformation of readily available beta-vinyl 99% carbon-13 enriched derivatives of protoporphyrin-IX dimethyl ester (3-5) into the less accessible alpha-vinyl labelled isomers (6-8) is described. The procedure involves thallium(III) promoted vinyl carbon rearrangement, and proceeds through 2,2-dimethoxyethyl (e.g. 10), formylmethyl (e.g. 11), 2-hydroxyethyl (e.g. 12) and 2-chloroethyl (e.g. 13) porphyrins; the rearranged vinyl groups are regenerated from 2-chloroethyl in the last step by treatment with base. No evidence of vinyl carbon scrambling in the sequence is observed, and spectroscopie data of the products are given." @default.
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- W1986895367 date "1986-01-01" @default.
- W1986895367 modified "2023-09-27" @default.
- W1986895367 title "Syntheses of protoporphyrin-IX regioselectively carbon-13 labelled at the alpha-vinyl carbons" @default.
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- W1986895367 doi "https://doi.org/10.1002/jlcr.2580230110" @default.
- W1986895367 hasPublicationYear "1986" @default.
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