Process for the Preparation of 5-Substituted 3-Aryl-3-(trifluoromethyl)-3,4-dihydro-2H-pyrroles
申请人:ARAKI Koichi
公开号:US20120029202A1
公开(公告)日:2012-02-02
The present invention relates to a process for the manufacturing of 5-substituted 3-aryl-3-(trifluoromethyl)-3,4-dihydro-2H-pyrroles of formula (I)
which comprises the following steps:
(i) reacting a compound of formula (II) with a isonitrile compound of formula (III)
in the presence of a metal catalyst to obtain compounds of formula (IV)
(ii) isomerizing compounds of formula (IV) to obtain compounds of formula (V) and
(iii) reacting the dihydropyrrole compound of formula (V) under acidic conditions, to obtain the compounds of formula (I), wherein X, n, Z, Y, and T are as defined in the description.
本发明涉及一种制造式(I)的5-取代的3-芳基-3-(三氟甲基)-3,4-二氢-2H-吡咯的过程,其中包括以下步骤:(i)在金属催化剂的存在下,将式(II)的化合物与式(III)的异腈化合物反应,得到式(IV)的化合物;(ii)异构化式(IV)的化合物,得到式(V)的化合物;(iii)在酸性条件下反应式(V)的二氢吡咯化合物,得到式(I)的化合物,其中X、n、Z、Y和T如描述中定义的那样。