2-氟萘烯甲醛 、 1-三苯基膦-2-丙酮 、 苯 在
苯 、 乙醇 作用下,
反应 24.0h,
以to give 14.6 grams of 4-(2-fluorenyl)-3-buten-2-one, m.p. 146° to 147.5° C. as white crystals的产率得到4-(2-fluorenyl)-3buten-2-one
Compounds of formula I below are useful as anti-inflammatory, analgesic and/or anti-pyretic agents: ##STR1## in which R.sup.1 is hydrogen, nitro, amino, hydroxyl, alkoxy of one to four carbon atoms, alkyl of one to four carbon atoms or halogen; R.sup.2 is hydrogen or alkyl of one to four carbon atoms; is a saturated or unsaturated bond; A is CO, CHOH, C(R.sup.5)OH or CHOCOR.sup.6, where R.sup.5 and R.sup.6 are alkyl of one to four carbon atoms; B is alkyl of one to twelve carbon atoms; and X is H.sub.2 or O.