Process for the preparation of 2,2-difluoroethylamine derivatives of the formula (IV)
comprising the steps (i) and (ii):
step (i): reaction of N-(2,2-difluoroethyl)prop-2-en-1-amine of the formula (I)
with a compound of the formula (II)
A-CH
2
-E (II)
to give a compound of the formula (III)
optionally in the presence of an inorganic or organic base, and step (ii): removal of the allyl group from the compound of the formula (III), in which, in the formulae (II), (III) and (IV), A and E have the meanings given in the description.
制备2,2-二
氟乙基胺衍
生物(IV)的过程包括步骤(i)和(ii):步骤(i):将式(I)的N-(2,2-二
氟乙基)丙-2-烯-1-胺与式(II)的化合物A-
CH2-E(II)反应,可选地在无机或有机碱的存在下,得到式(III)的化合物;步骤(ii):从式(III)的化合物中去除烯丙基基团。其中,在式(II),(III)和(IV)中,A和E具有描述中给出的含义。