| 摘要 |
The invention comprises compounds of the formula <FORM:1119377/C2/1> wherein each of X and X1 represents a hydrogen atom or a C1- 4 perfluoroalkyl or C1- 4 alkyl-sulphonyl radical, and process wherein a 5-allylidene -10, 11 - dihydro - 5H - dibenzo[a, d] cycloheptene is reacted with a peracid to form the corresponding 5 - (2,3 - epoxypropylidene) - derivative; the latter is rearranged in the presence of an acid catalyst to the corresponding 5 - (3 - oxopropylidene) - derivative - and said oxo-compound is reductively aminated with monomethylamine or dimethylamine to give a 5 - (mono- or di-methylaminopropylidene) 10,11 - dihydro - 5H - dibenzo(a,d)cycloheptene. |
