title: Oxidative rearrangement of internal alkynes to give one-carbon-shorter ketones via manganese porphyrins catalysis.
abstract: 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.
authors.affiliation: College of Chemistry and Chemical Engineering, Hunan University, Changsha Hunan 410082, PR China.
authors.forename: Wen-Bing
authors.initials: WB
authors.lastname: Sheng
authors.forename: Qing
authors.initials: Q
authors.lastname: Jiang
authors.forename: Wei-Ping
authors.initials: WP
authors.lastname: Luo
authors.forename: Can-Cheng
authors.initials: CC
authors.lastname: Guo
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D007659:Ketones / Q000138:chemical synthesis* / Q000737:chemistry; D008345:Manganese / Q000737:chemistry*; D008665:Metalloporphyrins / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction
chemical_list: D000480:Alkynes; D007659:Ketones; D008665:Metalloporphyrins; D008345:Manganese; D002244:Carbon