Title

Pyrroles and related compounds. Part XXX. Cyclisation of porphyrin β-keto-estersto phaeoporphyrins

Document Type

Article

Publication Date

12-1-1974

Abstract

Porphyrin β-keto-esters are cyclised to the corresponding phaeoporphyrins in high yield by treatment of the former with 2 equiv. of thallium(III) trifluoroacetate, followed by photolysis and demetallation. In this way, the first formal total syntheses of phaeoporphyrin-a5 dimethyl ester (6a) and 2-vinylphaeoporphyrin-a5 dimethyl ester (6b) have been accomplished.

Publication Source (Journal or Book title)

Journal of the Chemical Society, Perkin Transactions 1

First Page

527

Last Page

530

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