61429-66-1

Upstream product

• 103-71-9 phenyl isocyanate 
• 134567-92-3 ethyl 4,5-dioxo-2-phenyl-4,5-dihydrofuran-3-carboxylate 
• 94-02-0 ethyl 3-oxo-3-phenylpropionate 
• 62-53-3 aniline 
• 79-37-8 oxalyl dichloride 
• 3556-76-1 ethyl (2Z)-3-phenyl-3-(phenylamino)prop-2-enoate 

Downstream Products

• 131189-25-8 ethyl 4?hydroxy?5?oxo?1,2?diphenyl?2,5?dihydro?1H?pyrrole?3?carboxylate 
• 79607-25-3 1,4-dihydro-4-oxo-2-phenylquinoline-3-carboxylic acid ethyl ester 
• 154470-72-1 6-ethoxycarbonyl-5-phenyl-1,4-oxazinedione 
• 1334770-98-7 ethyl 2-amino-2',5-dioxo-1',5'-diphenyl-3-cyano-1',2'-dihydro-5H-spiro{pyrano[3,2-c]-chromen-4,3'-pyrrole}-4'-carboxylate 
• 1242422-05-4 ethyl 2-amino-3-cyano-7,7-dimethyl-2',5-dioxo-1',5'-diphenyl-1',2',5,6,7,8-hexahydrospiro[chromene-4,3'-pyrrole]-4'-carboxylate 
• 1335103-52-0 3-methyl 4'-ethyl 2-amino-7,7-dimethyl-2',5-dioxo-1',5'-diphenyl-1',2',5,6,7,8-hexahydrospiro[chromene-4,3'-pyrrole]-3,4'-dicarboxylate 
• 1353743-00-6 ethyl 5-(4-methylphenyl)-2',10,12-trioxo-1',5'-diphenyl-1',2',10,12-tetrahydro-5H-spiro[diindeno-[1,2-b : 2',1'-e]pyridine-11,3'-pyrrole]-4'-carboxylate 
• 1353742-99-0 ethyl 2',10,12-trioxo-1',5',5-triphenyl-1',2',10,12-tetrahydro-5H-spiro[diindeno[1,2-b:2',1'-e]pyridine-11,3'-pyrrole]-4'-carboxylate 
• 1410079-06-9 ethyl 2',11-dioxo-1',5'-diphenyl-1',2',5,11-tetrahydrospiro{indeno[1,2-b]quinoline-10,3'-pyrrole}-4'-carboxylate 
• 1380311-39-6 ethyl 8-methyl-2',11-dioxo-1',5'-diphenyl-1',2',5,11-tetrahydrospiro{indeno[1,2-b]quinoline-10,3'-pyrrole}-4′-carboxylate 
• 1410079-17-2 ethyl 5-(4-methoxyphenyl)-2,10,12-trioxo-1',5'-diphenyl-1',2',10,12-tetrahydro-5H-spiro{diindeno[1,2-b:2',1'-e]pyridine-11,3'-pyrrole}-4'-carboxylate 
• 1410079-10-5 ethyl 8-methoxy-2',11-dioxo-1',5'-diphenyl-1',2',5,11-tetrahydrospiro{indeno[1,2-b]quinoline-10,3'-pyrrole}-4'-carboxylate 

Relevant academic research and scientific papers

Reactions of Cyclic Oxalyl Compounds XXXIX [1]. Reactions of 4-Ethoxycarbonyl-5-phenyl-2,3-dihydrofuran-2,3-dione with Heterocumulenes and Schiff Bases

Furan-2,3-dione 1 reacts with arylisocyanates to the corresponding pyrrol-2,3-diones 2, whereas conversion with diisopropylcarbodiimide affords the oxazepin-6,7-dione derivative 3 in 68% yield. 1,3-Oxazines 5, 6, and 7 were obtained by thermolysis of 1 in boiling xylene in presence of arylisocyanates, diphenylketen-p-tolylimine, and Schiff bases, most likely by trapping the α-oxoketene intermediate 4. Preparative flash vakuum pyrolysis (FVP) of 1 and 2b gave 8 and 9, respectively.

Dioxopyrrolines. XXVII. Syntheses of 2-Aryl-3-ethoxycarbonyl-Δ2-pyrroline-4,5-diones

2-Aryl-3-ethoxycarbonyl-Δ2-pyrroline-4,5-diones (3) were easily prepared in good yields by condensation of enamino-esters (2) with oxalyl chloride.The products were characterized by ultraviolet and infrared spectroscopy. Keywords - Δ2-pyrroline-4,5-dione; dioxopyrroline; enamino-ester; ethyl 3-aryl-3-aminopropenoate; 2-aryl-3-ethoxycarbonyl-Δ2-pyrroline-4,5-dione; UV; restricted rotation