File:ETH AD Cycloisomerization.svg

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Vitamin B12 total syntheses (ETH A/D approach to cobyric acid): Photochemical A/D-seco-corrin → corrin cycloisomerization to the "common corrinoid intermediate"

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Description
English: Vitamin B12 total syntheses (ETH A/D approach to cobyric acid)ː Photochemical A/D-seco-corrin → corrin cycloisomerization (key step of the ETH A/D approach) to the "common corrinoid intermediate", a 5,15-bisnor-cobyrinate bearing a nitrile group at the ring-D f-propionic acid side chain, and ester groups at all other acetic and propionic acid side chains
Date
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Author Easyloc

Eschenmoser, A. (1971). Studies on Organic Synthesis. XXIIIrd International Congress of Pure and Applied Chemistry: special lectures presented at Boston, USA, 26-30 July 1971. 2. London: Butterworths. pp. 69–106. doi:10.3929/ethz-a-010165162. hdl:20.500.11850/84699. ISBN 0-408-70316-4

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