Aromatic allene compounds and preparation thereof.

摘要

Allene compounds have the formula: (CH2=C=CH-O)n- R -(A)m (I) in which R is a substituted or unsubstituted mono- or polyvalent benzene, naphthalene, anthracene, azobenzene, bisphenol or polyphenyl (containing 2 to 10 benzene rings connected in line) nucleus, or a group -Ph - R<1> - Ph - (II) (in which each group Ph is a phenylene, halophenylene, alkylphenylene, cyanophenylene or alkoxyphenylene group, and the chain R<1> linking the two group Ph is a C1 - C6 aliphatic hydrocarbon or an alicyclic hydrocarbon group, the chain optionally being interrupted by one or more oxygen atoms); A is a carboxyl or sulphonyl group or a group -CH=C=CH2; n is an integer of from 1 to 10; m is 0, 1, 2 or 3; and the sum of m and n is equal to the valence of the group R. They may be prepared by isomerization of corresponding propargyloxy compounds.