Chemical Communications 2002-07-21

Synthesis of cyclophanetetrayne complexes from bis(propargyldicobalt) dication equivalents.

Romelo Gibe, James R Green

Index: Chem. Commun. (Camb.) (14) , 1550-1, (2002)

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Abstract

Nicholas reactions of the p-phenyl linked bis(propargyl acetate) complex (3a) with electron rich arenes give cyclophanetetrayne complexes (5). The use of bis(propargyl ether) complex (8) with (3a) allows formation of a mixed cyclophanetetrayne complex (9), and in addition gives retro-Nicholas/intramolecular Nicholas reaction product (2).