ClC1C=CC(C(F)(F)F)=CC=1OC1C=C(C=CC=1)C(O)=O.S(Cl)(Cl)=O.CS(N)(=O)=O.[CH3:31][S:32]([NH:35][C:36](=[O:58])[C:37]1[CH:42]=[C:41]([O:43][C:44]2[CH:49]=[C:48]([C:50]([F:53])([F:52])[F:51])[CH:47]=[CH:46][C:45]=2[Cl:54])[CH:40]=[CH:39][C:38]=1[N+]([O-])=O)(=[O:34])=[O:33]>N1C=CC=CC=1>[CH3:31][S:32]([NH:35][C:36](=[O:58])[C:37]1[CH:38]=[CH:39][CH:40]=[C:41]([O:43][C:44]2[CH:49]=[C:48]([C:50]([F:53])([F:52])[F:51])[CH:47]=[CH:46][C:45]=2[Cl:54])[CH:42]=1)(=[O:33])=[O:34]The acid from (b) (0.8 g) was treated with thionyl chloride followed by methanesulphonamide and pyridine as described in paragraph (d) above for compound 32. The product was recrystallised from a mixture of ether and petroleum (b.p. 40°-60°) to give compound 31 with a melting point of 132°-133°.
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