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The title compound 5 was synthesized in 45% yield by the reaction of compound 3 with a, a-bis (bromomethyl)-2, 2-bipyridine in CH3CN at 70℃ for 24 h.
The title compound 5 was synthesized in 45% yield by the reaction of compound 3 with a, a-bis (bromomethyl) -2, 2-bipyridine in CH 3 CN at 70 ° C. for 24 h.