60769-85-9Relevant articles and documents
Dioxopyrrolines. XLIX. Synthesis of azatropolones via photocycloaddition of 5-aryl-4-ethoxycarbonyl-1H-pyrrole-2,3-diones to acetylenes and ethylenes
Sano,Horiguchi,Tsuda
, p. 3283 - 3295 (2007/10/02)
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2-AZABICYCLOHEPTANE-3,4-DIONES (2): STEREOCHEMISTRY OF THE PHOTO-CYCLOADDUCTS OF 3-ETHOXYCARBONYL-2-PHENYL-Δ2-PYRROLINE-4,5-DIONE WITH SUBSTITUTED OLEFINS.
Sano, Takehiro,Horiguchi, Yoshie,Tsuda, Yoshisuke
, p. 359 - 362 (2007/10/02)
The stereochemistries of photo-cycloadducts of 3-ethoxycarbonyl-2-phenyl-Δ2-pyrroline-4,5-dione with substituted olefins were established by chemical and spectroscopic means.Styrene- and butadiene-major adducts were 7-exo-isomers, while ethyl vinyl ether- and vinyl acetate-major adducts were 7-endo-isomers.The 7,7'-disubstitutsd derivative, the isopropenyl acetate-adduct, was also established as an O-endo-isomer.