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Intramolecular Carbene Addition to a Triple Bond – Matrix Photochemistry of α‐Diazo‐2‐ethynylacetophenone

 

作者: Peter Komnick,   Wolfram Sander,  

 

期刊: Liebigs Annalen  （WILEY Available online 1996）
卷期: Volume 1996, issue 1  

页码: 7-9

 

ISSN:0947-3440

 

年代: 1996

 

DOI:10.1002/jlac.199619960103

 

出版商: WILEY‐VCH Verlag

 

关键词: Carbene addition;Carbene rearrangement;Photochemistry;Matrix isolation

 

数据来源: WILEY

 

摘要:

AbstractThe irradiation (λ =403 nm) of α‐diazo‐2‐ethynylacetophenone (1 a) in solid argon at 10 K leads to (2‐ethynylphenyl)ketene (11) as the major product. A minor product is benzo‐4‐oxo‐2,5‐cyclohexadienylidene (6) which on 475‐nm irradiation reversibly rearranges to cycloprop[a]inden‐6(6aH)‐one (5a). This demonstrates that the intramolecular addition of the carbene center to the double bond can compete with

 

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