74430-62-9

Basic information

• Product Name: 7(R),7a(S)-2,3-Dioxo-7-hydroxy-5-phenyl-5,6,7,7a-tetrahydrofuro[3,2-c]pyridazine-3-phenylhydrazone
• Synonyms: 7(R),7a(S)-2,3-Dioxo-7-hydroxy-5-phenyl-5,6,7,7a-tetrahydrofuro[3,2-c]pyridazine-3-phenylhydrazone
• CAS NO: 74430-62-9
• Molecular Weight: 336.35
• Mol File: 74430-62-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 7(R),7a(S)-2,3-Dioxo-7-hydroxy-5-phenyl-5,6,7,7a-tetrahydrofuro[3,2-c]pyridazine-3-phenylhydrazone(CAS DataBase Reference)
• NIST Chemistry Reference: 7(R),7a(S)-2,3-Dioxo-7-hydroxy-5-phenyl-5,6,7,7a-tetrahydrofuro[3,2-c]pyridazine-3-phenylhydrazone(74430-62-9)
• EPA Substance Registry System: 7(R),7a(S)-2,3-Dioxo-7-hydroxy-5-phenyl-5,6,7,7a-tetrahydrofuro[3,2-c]pyridazine-3-phenylhydrazone(74430-62-9)

Safety Data

• Hazardous Substances Data: 74430-62-9(Hazardous Substances Data)

Upstream product

• 100-63-0 phenylhydrazine 
• 89-65-6 isoascorbic acid 
• 74352-42-4 Acetic acid (S)-2-bromo-1-((R)-3,4-dihydroxy-5-oxo-2,5-dihydro-furan-2-yl)-ethyl ester 
• 74352-43-5 6-Bromo-6-deoxy-D-isoascorbic acid 
• 35923-29-6 D-erythro-2,3-Hexodiulosono-1,4-lactone-2,3-bis(phenylhydrazone) 
• 28912-22-3 (S)-5-[(S)-1-hydroxy-2-(toluene-4-sulfonyloxy)-ethyl]-furan-2,3,4-trione 3,4-bis-phenylhydrazone 

Downstream Products

• 247200-59-5 4(S),5(R)-4,5-Dihydroxy-1-phenyl-3-(2-phenylhydrazonoglyoxalic acid-2-yl)-1,4,5,6-tetrahydropyridazine 

Relevant articles and documents

Synthetic potential inherent in D-isoascorbic acid as a precursor for pyridazine and furo[3,2-c]pyridazine ring systems with two asymmetric centers

Reaction of D-erythro-2,3-hexodiulosono-1,4-lactone-2,3-bis(phenylhydrazone) (2) with an iodine, triphenylphosphine and imidazole mixture afforded the furo[3,2-c]pyridazine derivative 11. Condensation of 6-bromo-6-deoxy-D-erythro-2,3-hexodiulosono-1,4-lactone with phenylhydrazine gave the bishydrazones 6, and 8 or the furo[3,2-c]pyridazine (11) depending on the reaction conditions. The lactone ring in 11 could be opened by treatment with alkali to give the pyridazine derivative 9. Lactonization of the later with simultaneous acetylation by acetic anhydride afforded the lactone derivative 14. Alkali treatment of 6 gave the pyrazolindione derivative 13 that gave upon reation with HBr/AcOH the dibromide 15. The assigned structures were based on spectral analysis. The activity of compounds 11 and 14 against hepatitis B virus has been studied.