Synthesis of substituted furans by palladium-catalyzed cyclization of acetylenic ketones
摘要:
Palladium-catalyzed cyclization of beta,gamma-acetylenic ketones gives furans by intramolecular oxypalladation and subsequent protodemetalation. 3-Allylfurans were exclusively obtained by trapping the intermediate 3-furyl-palladium species with allyl halides in the presence of 2,2-dimethyloxirane as a proton scavenger.
DOI:
10.1021/jo00020a024
作为产物:
描述:
4-undecyn-2-ol 在
jones reagent 作用下,
以
丙酮 为溶剂,
以62%的产率得到十一碳-4-炔-2-酮
参考文献:
名称:
Synthesis of substituted furans by palladium-catalyzed cyclization of acetylenic ketones
摘要:
Palladium-catalyzed cyclization of beta,gamma-acetylenic ketones gives furans by intramolecular oxypalladation and subsequent protodemetalation. 3-Allylfurans were exclusively obtained by trapping the intermediate 3-furyl-palladium species with allyl halides in the presence of 2,2-dimethyloxirane as a proton scavenger.