The cheletropic trapping of nitric oxide by the bis-ketene 1,2-dicarbonylcyclohexa-3,5-diene and the diene 3,4-diphenyl-2,5-dimethyl-2,4-hexadiene

Autor: Adam, Waldemar, Bottle, Steven E., Darren Grice, I., Pfeiler, Dietmar, Wentrup, Curt
Zdroj: Tetrahedron Letters; January 1996, Vol. 37 Issue: 12 p2113-2116, 4p
Abstrakt: We report the first example of the cheletropic trapping of nitric oxide with a bis-ketene. In the presence of nitric oxide the bis-ketene 1,2-dicarbonylcyclohexa-3,5-diene ( 1), generated from photolysis of benzocyclobutenedione, gave N-hydroxyphthalimide ( 5) and phthalic anhydride ( 7); additionally, cheletropic NO trapping with 3,4-diphenyl-2,5-dimethyl-2,4-hexadiene ( 3) gave strong persistent ESR signals, the nature of which was dependent on the purity of the NO.
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