| abstract |
NEW MATERIAL:Hydroquinone compounds of formula I [R 1 is lower alkyl, methoxymethyl; R 2 ,R 3 are methyl, methoxy, or may be form benzene ring with directly connecting carbons; R 4 is aromatic hydrocarbyl that may be substituted; n is 1W11]. n EXAMPLE: The compound of formula II. n USE: Synthetic intermediates of drugs as vitamin k, coenzyme Q, α-tocopherol, etc. n PREPARATION: The condensation reaction between a compound of formula III and a prenyl derivative of formula IV (X is halogen, tosyl) is effected in the presence of a basic compound to produce the objective compound of formula I. n COPYRIGHT: (C)1980,JPO&Japio |