Organic Letters p. 1946 - 1949 (2017)
Update date:2022-08-03
Topics:
Zhu, Jie
Mao, Mao
Ji, Huan-Jing
Xu, Jiang-Yan
Wu, Lei
A palladium-catalyzed two-component coupling of allenylphosphine oxides with conjugated N-tosylhydrazones is revealed. For the first time, the cleavage of α-allenylic aryl ether toward pyrazolemethylene-substituted phosphinyl allenes enabled facile synthesis of combined motifs with pyrazole and allene. Moreover, the obtained adducts could be easily transformed to potential bioactive multifunctionalized phosphinates via a novel alkenyl C-P(O) cleavage.
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