Direct Synthesis of 1-Arylprop-1-ynes with Calcium Carbide as an Acetylene Source
Lei Gao, Zheng Li*
*College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P. R. of China, Email: lizhengnwnu.edu.cn
L. Gao, Z. Li, Synlett, 2019, 30, 1580-1584.
DOI: 10.1055/s-0037-1610718 (free Supporting Information)
Aromatic aldehyde p-tosylhydrazones can directly be converted into 1-arylprop-1-ynes in the presence of calcium carbide as an acetylene source. This simple protocol offers use of a readily available source of acetylene, operational simplicity, high yield, and broad substrate scope.
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arylpropynes, calcium carbide, tosylhydrazones, alkynes, arylalkynes