A Facile, General Synthesis of 3,4-Difluoro-6-substituted-2-pyrones
摘要:
Reaction of (2E)-2,3-difluoro-3-iodoacrylic acid with a variety of terminal acetylenes under cocatalysis of PdCl2(PPh3)(2) and CuI gave difluorinated 2-pyrones as the sole product in good yields.