申请人:Bayer Aktiengesellschaft
公开号:US20210276958A1
公开(公告)日:2021-09-09
The present invention relates to a process for preparing compounds of the formula (I)
starting from compounds of the formula (II)
in which R
1
, R
2
and R
3
have the abovementioned meaning and where R
1
and R
3
are not simultaneously hydrogen in any compound.
The invention further provides the compounds of the formulae (IVa), (IVb), (V) and (VI) in which R
1
, R
2
, R
3
, R
5
, M and n have the abovementioned meaning.
本发明涉及一种从式子(II)的化合物开始制备式子(I)化合物的过程,其中R1、R2和R3具有上述含义,并且在任何化合物中R1和R3不同时为氢。本发明还提供了式子(IVa)、(IVb)、(V)和(VI)的化合物,其中R1、R2、R3、R5、M和n具有上述含义。