Reaktionen mit Phosphinalkylenen, XLII. Eine Aufbausequenz für Acetylene aus Carbonsäurechloriden und Phosphonium‐Yliden über 1,2‐Diketone | Zendy

Bestmann Hans Jürgen | Zendy; Kumar Kamlesh | Zendy; Kisielowski Lothar | Zendy

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Reaktionen mit Phosphinalkylenen, XLII. Eine Aufbausequenz für Acetylene aus Carbonsäurechloriden und Phosphonium‐Yliden über 1,2‐Diketone

Author(s) -

Bestmann Hans Jürgen,

Kumar Kamlesh,

Kisielowski Lothar

Publication year - 1983

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19831160628

Subject(s) - chemistry , diketone , phosphonium , medicinal chemistry , adduct , phosphine , pyridine , acetylene , phosphorus , bicyclic molecule , triethylamine , organic chemistry , catalysis

Reactions with Phosphine Alkylenes, XLII. A Sequence for the Preparation of Acetylenes Starting from Carboxylic Chlorides and Phosphorus Ylides via 1,2‐Diketones Phosphorus ylides 1 and carboxylic chlorides 2 react with transylidation to give acyl ylides 3 which are oxidized with the adduct of ozone to triphenyl phosphite to yield 1,2‐diketones 5 . These are converted into the bis(hydrazones) 6 which are oxidized with O 2 /CuCl in pyridine giving acetylenes 7 .

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