and N-(2-bromo-4-methylphenyl)-4-methyl-3,6-dihydro-2H-pyran-3-amines which were converted into the corresponding amides by reaction with bromo- or chloroacetyl chloride. 1-4a,6-Dimethyl-4a,9a-dihydropyrano[3,4-b]indol-9(1H)-yl} ethanone was synthesized in good yield by heating N-(2-bromo-4-methylphenyl)-N-(4-methyl-3,6-dihydro-2Hpyran-3-yl)acetamide in boiling toluene in the presence of palladium(II)
的
溴化产物的加热4-甲基-3,6-二氢-2 H ^ -
吡喃在
三乙胺4-甲
苯胺或2-
溴-4- methylamiline得到4-甲基- ñ - (4-甲基苯基) -和ñ - (2-
溴-4-甲基苯基)-4-甲基-3,6-二氢-2 H-
吡喃-3-胺,其通过与
溴或
氯乙酰氯反应转化为相应的酰胺。通过加热N-(2-
溴-4-甲基苯基)以高收率合成1- 4a,6-二甲基-4a,9a-二氢
吡喃并[3,4- b ]
吲哚-9(1 H)-基}乙酮。- ñ - (4-甲基-3,6-二氢-2 ħ在
乙酸钯(II),三苯膦,
乙酸铜(II),
三乙胺和
碳酸钾的存在下,在沸腾的
甲苯中生成
吡喃-3-基)乙酰胺。