[EN] PROCESS FOR PREPARING QUINAZOLINE DERIVATIVE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉ DE QUINAZOLINE
申请人:SCINOPHARM CHANGSHU PHARMACEUTICALS LTD
公开号:WO2015188318A1
公开(公告)日:2015-12-17
A concise, efficient and cost-and time-saving process for the preparation of a quinazoline derivative of formula (A) given below: which is an intermediate for making gefitinib or gefitinib itself, comprising reacting a compound of formula (B): with 3-chloro-4-fluoroaniline (VI) in the presence of a N,N-dialkyl formamide acetal, a Bronsted acid catalyst, and a solvent in a one-pot reaction.
A concise, efficient and cost- and time-saving process for the preparation of a quinazoline derivative of formula A given below:
which is an intermediate for making gefitinib or gefitinib itself, comprising reacting a compound of Formula B:
with 3-chloro-4-fluoroaniline (VI) in the presence of a N,N-dialkyl formamide acetal, a Bronsted acid catalyst, and a solvent in a one-pot reaction.