Flash Pyrolysis of 4‐Arylmethylidene‐oxazolones and ‐isoxazolones. A Versatile Synthesis of Arylacetylenes. Preliminary communication | Zendy

Wentrup Curt | Zendy; Reichen Werner | Zendy

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Flash Pyrolysis of 4‐Arylmethylidene‐oxazolones and ‐isoxazolones. A Versatile Synthesis of Arylacetylenes. Preliminary communication

Author(s) -

Wentrup Curt,

Reichen Werner

Publication year - 1976

Publication title -

helvetica chimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.74

H-Index - 82

eISSN - 1522-2675

pISSN - 0018-019X

DOI - 10.1002/hlca.19760590738

Subject(s) - chemistry , pyrolysis , flash vacuum pyrolysis , benzene , biphenyl , alkoxy group , acetonitrile , flash (photography) , oxazolone , organic chemistry , medicinal chemistry , photochemistry , alkyl , art , visual arts

Flash pyrolysis of 4‐benzylidene‐2‐phenyl‐5(4 H )‐oxazolone ( 1 ) yields carbonmonoxide, benzene, biphenyl, diphenylacetonitrile, and 2,3‐diphenylsuccinonitrile; N‐benzoylphenylketenimine is implicated as the primary intermediate. The flash pyrolysis of 4‐arylmethylidene‐3‐methyl‐5(4 H )‐isoxazolones ( 3 ) yields carbon dioxide, acetonitrile, and phenylacetylenes substituted by alkoxy, chloro, dimethylamino, and hydroxy groups, in yields of 45–95%. Arylmethylidenecarbenes are implicated as intermediates.

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