91948-45-7

Basic information

• Product Name: potassium 4-methoxy-5,7-dinitro-4,5-dihydrobenzofurazanide 3-oxide
• Synonyms: potassium 4-methoxy-5,7-dinitro-4,5-dihydrobenzofurazanide 3-oxide
• CAS NO: 91948-45-7
• Molecular Weight: 296.238
• Mol File: 91948-45-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: potassium 4-methoxy-5,7-dinitro-4,5-dihydrobenzofurazanide 3-oxide(CAS DataBase Reference)
• NIST Chemistry Reference: potassium 4-methoxy-5,7-dinitro-4,5-dihydrobenzofurazanide 3-oxide(91948-45-7)
• EPA Substance Registry System: potassium 4-methoxy-5,7-dinitro-4,5-dihydrobenzofurazanide 3-oxide(91948-45-7)

Safety Data

• Hazardous Substances Data: 91948-45-7(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 5128-28-9 4,6-dinitrobenzofuroxan 

Downstream Products

• 105563-89-1 C₁₄H₁₂N₅O₆^(1-)*K⁽¹⁺⁾ 
• 105563-82-4 C₁₂H₇N₄O₇^(1-)*K⁽¹⁺⁾ 
• 105563-87-9 C₁₂H₈N₅O₆^(1-)*K⁽¹⁺⁾ 

Relevant articles and documents

Methanol Attack on Highly Electrophilic 4,6-Dinitrobenzofurazan and 4,6-Dinitrobenzofuroxan Derivatives. A kinetic Study

Methanol readily adds to the unsubstituted 7-carbons of 4,6-dinitrobenzofurazan (DNBZ) and 4,6-dinitrobenzofuroxan (DNBF) as well as the methoxy-bearing carbon of 7-methoxy-4,6-dinitrobenzofurazan (MDNBZ) to form the most stable methoxyl ? adducts known in this solvent.The formation and decomposition of the adducts are subject to general base and general acid catalysis, respectively, with β (α) values of ca.0.50, indicating a concerted mechanism.The results suggest that methoxide ion behaves as a base catalyst for methanol addition rather than as a nucleophile.The intrinsic rate constants k0 (in the Marcus sense) have been determined for the derivatives.Although the equilibrium constant for methanol addition to MDNBZ is somewhat greater than for addition to DNBZ and DNBF, the k0 value for the latter derivatives is about 10-fold higher than that for MDNBZ.This indicates a higher intrinsic barrier for attack at a methoxy-bearing than at an unsubstituted carbon, in qualitative agreement with previously reported patterns in the benzene series.The high reactivity of DNBZ, DNBF, and MDNBZ toward methanol and other bases, together with the very high stability of the resulting adducts, emphasizes the superelectrophilic character of these electron-deficient aromatics.