73202-32-1

Upstream product

• 59046-34-3 3-ethoxycarbonyl-2-phenyldioxopyrroline 
• 106-98-9 1-butylene 
• 60769-89-3 rel-(1S,5R,7R)-5-ethoxycarbonyl-1-phenyl-7-vinyl-2-azabicyclo<3.2.0>heptane-3,4-dione 

Downstream Products

• 80016-15-5 dl-(1R*,5S*,7S*)-3-ethoxy-5-ethoxycarbonyl-7-ethyl-1-phenyl-2-azabicyclo<3.2.0>hept-2-en-4-one 
• 133487-87-3 5-Ethyl-3-ethoxycarbonyl-2-methoxycarbonyl-6-phenylpyridine 
• 73186-24-0 4-Ethoxycarbonyl-6-ethyl-3-methoxy-7-phenyl-2H-azepin-2-one 
• 80016-15-5 dl-(1R*,5S*,7R*)-3-ethoxy-5-ethoxycarbonyl-7-ethyl-1-phenyl-2-azabicyclo<3.2.0>hept-2-en-4-one 
• 73197-63-4 4-Ethoxycarbonyl-6-ethyl-3-methoxy-7-phenyl-1,5-dihydro-2H-azepin-2-one 

Relevant academic research and scientific papers

Dioxopyrrolines. XXXVI. Photocycloaddition Reaction of 4-Ethoxycarbonyl-5-phenyl-1H-pyrrole-2,3-dione to Acyclic Olefins. Structural and Stereochemical Assigment of the Photocycloadducts

The photocycloaddition of the dioxopyrroline 1 to olefins with electron donating substituents proceeded with regio- and stereo-selectivity to give the 7-substituted 2-azabicycloheptane-3,4-diones 2 and 3, together with, in a few instances, the dihydropyridone 4.The stereochemistries of the adducts were dependent on the nature of the olefins.Olefins carrying phenyl, vinyl, and alkyl substituents afforded the exo-adducts 2, while olefins carrying an O-substituent afforded the endo-adducts 3, predominantly.The structures of these cycloadducts were established by X-ray crystallographic analyses, chemical correlations, and spectroscopic means.Keywords-photocycloaddition; 1H-pyrrole-2,3-dione; dioxopyrroline; 2-azabicyclo-heptane-3,4-dione; electron rich olefin; stereochemistry; cycloadduct; X-ray analysis