524-49-2

Basic information

• Product Name: 5H-benzo[b]phosphindol-5-ol 5-oxide
• CAS NO: 524-49-2
• Molecular Formula: C₁₂H₉O₂P
• Molecular Weight: 216.1724
• Mol File: 524-49-2.mol

Chemical Properties

• Boiling Point: 519.9°C at 760 mmHg
• Flash Point: 268.3°C
• Density: 1.4g/cm³
• Vapor Pressure: 1.23E-11mmHg at 25°C
• Refractive Index: 1.67
• CAS DataBase Reference: 5H-benzo[b]phosphindol-5-ol 5-oxide(CAS DataBase Reference)
• NIST Chemistry Reference: 5H-benzo[b]phosphindol-5-ol 5-oxide(524-49-2)
• EPA Substance Registry System: 5H-benzo[b]phosphindol-5-ol 5-oxide(524-49-2)

Safety Data

• Hazardous Substances Data: 524-49-2(Hazardous Substances Data)

Upstream product

• 19190-38-6 5-benzyldibenzo[b,d]phosphole 5-oxide 
• 33300-85-5 9-Chlorodibenzophosphole 
• 19190-37-5 benzyl-5 dibenzophosphole 
• 318-13-8 [1,1'-biphenyl]-2-diazonium tetrafluoroborate 
• 603-35-0 triphenylphosphine 
• 82214-69-5 2-biphenylmagnesium bromide 
• 87989-51-3 C₁₂H₉Cl₂P 
• 84530-59-6 5-morpholinodibenzophosphole 
• 2751-90-8 tetraphenylphosphonium bromide 
• 13029-09-9 2,2'-dibromobiphenyl 
• 84530-93-8 4-(5-Oxo-5H-5λ⁵-dibenzophosphol-5-yl)-morpholine 
• 762-04-9 phosphonic acid diethyl ester 
• 1088-00-2 9-phenyl-9-phosphafluorene 
• 4762-79-2 bis-(1,1'-dibenzophospholyl) 

Downstream Products

• 65700-13-2 5-(2,6-bis-tetrahydropyran-2-yloxymethyl-phenyl)-5H-benzo[b]phosphindole 
• 65715-51-7 [2-(5-oxo-5H-5λ⁵-benzo[b]phosphindol-5-yl)-m-phenylene]-bis-methanol 
• 65654-59-3 1'H,4'H-5λ⁵-spiro[benzo[b]phosphindole-5,2'a-(2,3-dioxa-2a-phospha-cyclopenta[cd]indene)] 
• 80918-99-6 5-dibenzophosphole-5-oxide 
• 33300-85-5 9-Chlorodibenzophosphole 

Relevant articles and documents

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Synthesis of Substituted Dibenzophospholes. Part 1.

Approaches to the synthesis of 4,6-diaryl-5-hydroxydibenzophosphole 5-oxides are described. 3,5,7-Trihydroxydibenzophosphole 5-oxide and several of its O-substituted derivarives were made either from 5-hydroxydibenzophosphole 5-oxide (convenient preparation described) by dinitration, reduction and tetrazotization or from 2,2'-dibromo-4,4'-dimethoxybiphenyl via lithiation and reaction with dichloromorpholinophosphine with subsequent oxidation. 3,5,7-Trihydroxydibenzophosphole 5-oxide could be selectively blocked in the 2,8-positions by methyl groups generated via a Mannich reaction.The bis-2-iodobenzyl ethers of 3,7-dihydroxy-5-methoxydibenzophosphole 5-oxide and of its 2,8-dimethyl derivative were cyclized by photolysis to form 4,6-diaryl derivatives in poor yield.