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  • An efficient synthesis of epoxydiynes and a key fragment of neocarzinostatin chromophore.

An efficient synthesis of epoxydiynes and a key fragment of neocarzinostatin chromophore.

Organic letters (2006-12-29)
J R Baker, O Thominet, H Britton, S Caddick
ABSTRACT

[reaction: see text] A key structural feature of the Neocarzinostatin chromophore is a reactive epoxydiyne. We present here a new method for the preparation of epoxydiynes by the addition of an allenyl zinc bromide to a propargylic ketone.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Zinc bromide, 99.999% trace metals basis
Sigma-Aldrich
Zinc bromide, AnhydroBeads, −10 mesh, 99.999% trace metals basis