Abstract
The reaction of arylacetylenes 1 and N, N-dimethylformamide dimethylacetal ( 2a , DMF-DMA) afforded the corresponding arylpropargyl aldehydes 3 in moderate yields. Similarly, the reaction of 1 and N, N-dimethylacetamide dimethylacetal ( 2b , DMA-DMA) gave 4-aryl-3-butyn-2-ones 4 .
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