1 resultado para INDUSTRIA MILITAR - BRASIL - 2003-2009

em Chinese Academy of Sciences Institutional Repositories Grid Portal


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A facile and convenient synthesis of dihydropyranones has been developed by a formal [4+2] annulation of readily available alpha-acetyl ketene S,S-acetals with various aldehydes, involving a tandem aldol reaction and conjugate addition-elimination reaction, in the presence of NaOH in water.