| 摘要 |
The present invention relates to a method for producing 6-chlorodibenzo [d,f] [1,3,2]dioxaphosphepin (I) in which 2,2'-dihydroxybiphenyl is reacted with PCl3 in the presence of a catalytic quantity of an acid salt of a nitrogenous base, the reaction taking place in the absence of external organic solvents. |
