170470-64-1

Basic information

• Product Name: 2-diphenylphosphorohydrazino-4-diphenylphosphorohydrazono-2,3-dihydro-4H-1-benzo-pyran
• Synonyms: 2-diphenylphosphorohydrazino-4-diphenylphosphorohydrazono-2,3-dihydro-4H-1-benzo-pyran
• CAS NO: 170470-64-1
• Molecular Weight: 656.571
• Mol File: 170470-64-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-diphenylphosphorohydrazino-4-diphenylphosphorohydrazono-2,3-dihydro-4H-1-benzo-pyran(CAS DataBase Reference)
• NIST Chemistry Reference: 2-diphenylphosphorohydrazino-4-diphenylphosphorohydrazono-2,3-dihydro-4H-1-benzo-pyran(170470-64-1)
• EPA Substance Registry System: 2-diphenylphosphorohydrazino-4-diphenylphosphorohydrazono-2,3-dihydro-4H-1-benzo-pyran(170470-64-1)

Safety Data

• Hazardous Substances Data: 170470-64-1(Hazardous Substances Data)

Upstream product

• 33862-44-1 diphenyl phosphorohydrazidate 
• 491-38-3 1-benzopyran-4(4H)-one 
• 170470-63-0 3-(2-hydroxyphenyl)-1,3-(bis-diphenylphosphorohydrazono)propane 

Downstream Products

• 34810-67-8 2-(1H-pyrazol-3-yl)phenol 

Relevant articles and documents

Investigation in the Chromone Series. Part XXII. Reactivity of Phosphorohydrazides with 4-oxo-4H-1-benzopyran and its Methyl Derivatives

In the reaction of chromone (4-oxo-4H-1-benzopyran) (1a) with two moles of diphenylphosphorohydrazide (2) tautomeric compounds 3a and 4a were obtained.In the same conditions 6- and 8- methyl-4-oxo-4H-1-benzopyran (1b, c) forms only 4b and 4c tautomers, and the 2-methyl derivative does not react with the compound 2.Diphenylthiophosphorohydrazide (5) does not react with the studied compounds.Nucleophilic properties of N-1 and N-2 nitrogens in phosphoro- and thiophosphorohydrazide were compared with the previously studied methyl- and phenylhydrazide in the reaction with 4-oxo-4H-1-benzopyran. Key words: 3-(2-hydroxyphenyl)-1,3-bis(diphenylphosphorohydrazono)-propane, 2-diphenylphosphorohydrazino-4-diphenylphosphorohydrazono-2,3-dihydro-4H-1-benzopyran, structure, tautomerism of