Siawash Ahmar

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The conjugate alkynylation of alkylidene Meldrum's acids with alkynylalanes and alkynyl Grignards allows for the formation of propargylic all-carbon quaternary stereocenters in high yields. Ag2CO3-catalyzed intramolecular cyclization of propargylic Meldrum's acid derivatives offers a two-step entry into complex γ-alkylidene butyrolactones containing an(More)
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