Heterocycles p. 507 - 518 (1993)
Update date:2022-08-03
Topics:
Shiao, Min-Jen
Liu, Kang-Hsiuan
Lin, Pen-Yuan
3-substituted 4-arylpyridines (5a-i) were synthesized in good yields by reaction of mixed copper, zinc aryl organometallics (2a-e) with 1-ethoxycarbonylpyridinium chlorides (1a-d) followed by o-chloranil oxidation under reflux in toluene.The arylpyridines (5a-i) are obtained predominantly.Having compounds (5a-i) in hand, a convenient method was developed for the synthesis of 2-azafluorenones (7a-f) by using cyclization of 4-arylpyridines (5a-i) with phosphoric acid.
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Doi:10.1021/j100137a022
(1993)Doi:10.1002/chem.201503403
(2016)Doi:10.1080/10426507.2017.1295960
(2017)Doi:10.1002/ardp.19933260604
(1993)Doi:10.1055/s-1993-25880
(1993)Doi:10.1016/0022-328X(93)83113-A
(1993)
