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Synthesis 1988; 1988(9): 727-729
DOI: 10.1055/s-1988-27690
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A Facile Route to 5-Alkyl-1,1-bis(methylthio)penta-1,4-dien-3-ones

C. V. Asokan* , M. P. Balu, H. Ila, H. Junjappa
  • *Department of Chemistry, North-Eastern Hill University, Shillong 793 003, Meghalaya, India
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Publication History

Publication Date:
18 September 2002 (online)

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(3-Dimethylamino-2-propenoyl)ketene dithioacetals 3a-c, obtained by condensation of the corresponding acylketene dithioacetals 1a-c with dimethylformamide diethyl acetal, undergo 1,4-additions with alkyl Grignard reagents (RMgX, R = CH3, C2H5, n-C3H7 and i-C3H7) on the enaminone moiety to afford the title compounds 4a-l in good yields.

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