The invention relates to a process for the preparation of a compound of the formula
1
wherein Q, Y, Z, R
1
, R
2
, R
3
, R
4
and R
5
are as defined in the specification, which comprises
a) reacting a compound of the formula
2
with a halogenating agent to form a compound of the formula
3
or
b) converting a compound of formula (II) by means of a halogenating agent into a compound of the formula
4
optionally
c) converting the compound of formula (IV) into a compound of formula (III);
d) converting a compound of formula (III) by means of a compound of the formula
5
into a compound of the formula
6
or
e) converting a compound (IV) by means of a compound (V) into a compound (VI); and
f) converting a compound (VI) by means of a chlorinating agent into a compound (I);
a compound (IV); to a process for the preparation of a compound (III) and to a process for the preparation of a compound (IV).
本发明涉及一种制备式1化合物的方法,其中Q、Y、Z、R1、R2、R3、R4和R5如规范中所定义,包括a)将式2化合物与卤化剂反应,形成式3化合物;或b)通过卤化剂将式(II)化合物转化为式4化合物;可选地c)将式(IV)化合物转化为式(III)化合物;d)通过式5化合物将式(III)化合物转化为式6化合物;或e)通过式(V)化合物将式(IV)化合物转化为式(VI)化合物;以及f)通过
氯化剂将化合物(VI)转化为化合物(I);一种化合物(IV)的制备方法,一种化合物(III)的制备方法和一种化合物(IV)的制备方法。