Synthesis of Multisubstituted Allenes via Palladium-Catalyzed Cross-Coupling Reaction of Propargyl Acetates with an Organoaluminum Reagent
Zhen Zhang, Song Mo, Gang Zhang, Xuebei Shao, Qinghan Li*, Ying Zhong
*College of Chemistry and Environmental Proection Engineering, Southwest University for Nationalities, Chengdu, 610041, P. R. of China, Email: lqhchemswun.cn
Z. Zhang, S. Mo, G. Zhang, X. Shao, Q. Li, Y. Zong, Synlett, 2017, 28, 611-614.
DOI: 10.1055/s-0036-1588389 (free Supporting Information)
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Pd(PPh3)2Cl2/Ph3P catalyzes a reaction of propargyl acetates with 1.2 equivalents of an organoaluminum reagent in the presence of K2CO3 in THF to produce tri- or tetrasubstituted allenes in good to excellent yields and high regioselectivities at 60°C.
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allenes, palladium, propargyl acetate, organoaluminum reagent, cross-coupling