The photoinitiated substitution reactions of 2‐pyridinecarbonitrile with benzophenone in aqueous 2‐propanol
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The photoinitiated reaction of 2-pyridinecarbonitrile and benzophenone in acidic 4:1 2-propanol-water yields substitution product 3 and bicyclic product 4. In nonacidic solution 3 is the principal product in addition to small amounts of a bipyridyl compound 5.
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