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Azuleno pyridine

Pyridines. Azuleno[l,2-b]pyridone (214 Scheme 49) forms in the vacuum pyrolysis of 3-ethynyl-2-phenylpyridine (213) as a by-product (02EJO254 . Azuleno[l,8-cd]pyridinedione 216 similarly occurs as a minor by-product on irradiating the bridged dihydronaphthalene 215 (a tetraenic propellane) to form tetracyclodecadienes by an electrocyclic reaction (69ISJ435). The formation of azulene 216 involves dehydrogenation. [Pg.169]

See other pages where Azuleno pyridine is mentioned: [Pg.551]    [Pg.178]    [Pg.181]    [Pg.182]    [Pg.183]    [Pg.185]    [Pg.188]    [Pg.12]   
See also in sourсe #XX -- [ Pg.169 ]



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