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Cyclohexadienones, electrocyclic ring opening

Disubstituted 2,4-cyclohexadienones (112) undergo photoinduced electrocyclic ring opening to the transient ketene derivatives 113, which can be trapped by nucleophiles to prepare the corresponding carboxylic acid derivatives (114 equation 44)196 197 j le reaction has been employed successfully for the synthesis of various carboxylic acids, esters and amides. [Pg.229]

See other pages where Cyclohexadienones, electrocyclic ring opening is mentioned: [Pg.151]    [Pg.228]    [Pg.141]    [Pg.151]    [Pg.136]    [Pg.542]    [Pg.122]    [Pg.337]   


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2,4-cyclohexadienone

Ring electrocyclic

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