A Concise Access to 3-Substituted 2-Pyrones

[摘要]：The development of a modular synthesis of 3-substituted-2-pyrones is described The attainment of this strategy hinges on a new electrophilic pyrone derivative which can be readily prepared on a multigram scale and which performs very competently in metal-catalyzed cross-coupling reactions with a variety of nucleophiles

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