国家/地区 中国（2）
IPC部 B（2） C（2）
IPC大类 B01（2）
IPC小类 B01J（2） C07D（2）
IPC B01J027/122（2）
发明人
公开年 2022（2）
申请年
专利权人

Preparing paraquat by mixing pyridine and methanol, dripping methyl chloride, carrying out pyridine alkylation reaction and dimerization reaction, removing impurities, adding beating water, acid solution, homogeneous catalyst, feeding liquid chlorine, reacting, filtering and separating catalyst.

HUO M, FU S, WU C, ZHANG L, ZHANG Z, YU J

Catalyst composition useful for catalyzing methylation and/or propargylation reactions, and preparing pyraclonil, comprises e.g. graphene oxide and anion exchange resin, sodium bromide, potassium bromide, copper chloride, tetrabutylamine bromide, and tetrabutylamine iodide.

KONG F, CHEN L, SU W, SUN Y, ZHANG K, ZENG R