| abstract |
NEW MATERIAL:A compound shown by formula I (ph is phenyl, halogenated phenyl, alkyl-substituted phenyl, cyano-substituted phenyl, etc.; R is 1W6C aliphatic hydrocarbon, alicyclic hydrocarbon, etc.). n EXAMPLE: 2,2'-Bis(4-allenyloxyphenyl)propane. n USE: A synthetic intermediate of an allene compound of a reactive polymer raw material. n PREPARATION: A polyphenol compound shown by the formula HO-ph-R-ph-OH is reacted with a propargyl halide under an alkali condition to give phenyl propargyl ether shown by formula II. Then this ether is allenylated in the presence of a base (e. g., potassium alcoholate of t-butyl alcohol) by isomerization reaction to give a compound shown by formula I. n COPYRIGHT: (C)1989,JPO&Japio |