Hexadienecarboxylic acids

Photochemical ring opening of linearly conjugated cyclohexadienones affords dienylketenes (145), which react in one of the following ways recycli-zation to the original or to a stereoisomeric cyclohexadienone, formation of bicyclo[3.l.0]hexenones (146), or addition of a protic nucleophile to yield substituted hexadienecarboxylic acids (147) (Quinkert et al., 1979). 

---

See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ ]

---