82141-12-6

Upstream product

• 1445-69-8 2,3-dihydrophthalazine-1,4-dione 
• 886-65-7 trans,trans-1,4-Diphenyl-1,3-butadiene 
• 182220-57-1 cis-1-amino-2,5-diphenyl-3-pyrroline 

Downstream Products

• 102725-63-3 1-bromo-1,4-diphenyl-1,4,6,11-tetrahydropyridazino<1,2-b>phtalazine-6,11-dione 
• 891-22-5 3,6-diphenylpyridazine 
• 102725-66-6 1,4-diphenyl-6,11-dihydropyridazino<1,2-b>phtalazine-6,11-dione 
• 102725-64-4 1-ethoxy-1,4-diphenyl-1,4,6,11-tetrahydropyridazino<1,2-b>phtalazine-6,11-dione 

Relevant academic research and scientific papers

Hydrazinolysis of (E)- and (Z)-2-Phenyl-3-Phenylethenyl-1-Phthalimidoaziridines

Hydrazinolysis of stereoisomeric trans-2-phenyl-3-[(E)- and (Z)-phenylethenyl]-1-phthalimidoaziridines proceeds stereospecifically and yields not the expected 1-amino-2-phenyl-3-phenylethenylaziridines but isomeric 1-amino-2,5-diphenyl-3-pyrrolines. Oxidation of the latter with lead tetraacetate is also stereo-specific, and it results in formation of stereoisomeric 1,4-diphenylbutadienes. Hydrazinolysis of (E)-phthalimidoaziridines under milder conditions yields a product of incomplete removal of the phthaloyl group, whose oxidation affords cis-1,4-dihydro-1,4-diphenylpyridazino[1,2-b]phthalazine-6,11-dione.

Bridgehead Hydrazines. 3. Unusual Photorearrangement of 1,4-Diphenylpyridazinophthalazine-6,11-dione

1,4-Diphenylpyridazinophthalazine-6,11-dione (2a) was prepared through Diels-Alder reaction of phthalazine and 1,4-diphenylbutadiene, followed by allylic bromination and thermal 1,4-dehydrobromination.Upon photolysis, 2a isomerized to an isoindolo