Oxidative Rearrangement of Internal Alkynes To Give One-Carbon-Shorter Ketones via Manganese Porphyrins Catalysis
2013
Sheng, Wen-Bing | Jiang, Qing | Luo, Wei-Ping | Guo, Can-Cheng
Oxidative rearrangement of internal alkynes catalyzed by manganese(III) porphyrin is described, which opens a new access to one-carbon-shorter ketones using molecular oxygen. Under the standard conditions, a variety of alkynes including diarylalkynes and arylalkylalkynes rearranged smoothly to the corresponding ketones in high yields. Based upon experimental observations, a plausible reaction mechanism is proposed.
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