C(OC1N=NC(C#CC2C=CC(C(F)(F)F)=CN=2)=CC=1OCC1C=CC=CC=1)C1C=CC=CC=1.[CH2:35]([O:42][C:43]1[N:44]=[N:45][C:46]([C:57]#[CH:58])=[CH:47][C:48]=1[O:49][CH2:50][C:51]1[CH:56]=[CH:55][CH:54]=[CH:53][CH:52]=1)[C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1.[Cl:59][C:60]1[CH:65]=[CH:64][CH:63]=[CH:62][C:61]=1I>>[CH2:35]([O:42][C:43]1[N:44]=[N:45][C:46]([C:57]#[C:58][C:61]2[CH:62]=[CH:63][CH:64]=[CH:65][C:60]=2[Cl:59])=[CH:47][C:48]=1[O:49][CH2:50][C:51]1[CH:56]=[CH:55][CH:54]=[CH:53][CH:52]=1)[C:36]1[CH:37]=[CH:38][CH:39]=[CH:40][CH:41]=1Prepared as described for 3,4-bis(benzyloxy)-6-{[5-(trifluoromethyl)pyridin-2-yl]ethynyl}pyridazine (Intermediate 6) from 3,4-bis(benzyloxy)-6-ethynylpyridazine (Intermediate 5) and 1-chloro-2-iodobenzene in 59% yield.
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