| 摘要 |
A process is described for the manufacture of a pyridinesulfonyl chloride or a benzenesulfonyl chloride in which the benzene ring bears one or more electron-withdrawing groups, the process comprising reacting a diazonium salt of an aminopyridine or aminobenzene in which the benzene ring bears one or more electron withdrawing groups with a mixture of thionyl chloride in water, in the presence of an electron transfer catalyst. |
