Reaction of o-(methoxy) aryloxazolines 1 with organolithium or Grignard reagents results in methoxy displacement to the ()-(alkyl)-, o-(aryl)-, and o-(viny1) aryloxazolines 3. A variety of organometallics were employed and only those considered to be delocalized anions failed to displace the methoxy group. Various poly (methoxy) aryloxazol-ines I la-e) were investigated, and the reactions proceeded with general success, the yields dropping off in ...