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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 .