710-89-4

Basic information

• Product Name: 3,4-dimethyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide
• Synonyms: 3,4-Dimethyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide
• CAS NO: 710-89-4
• Molecular Formula: C₁₂H₁₅OP
• Molecular Weight: 206.2207
• Mol File: 710-89-4.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 372.5°C at 760 mmHg
• Flash Point: 179.1°C
• Density: 1.09g/cm³
• Vapor Pressure: 2.05E-05mmHg at 25°C
• Refractive Index: 1.533
• CAS DataBase Reference: 3,4-dimethyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-dimethyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide(710-89-4)
• EPA Substance Registry System: 3,4-dimethyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide(710-89-4)

Safety Data

• Hazardous Substances Data: 710-89-4(Hazardous Substances Data)

Upstream product

• 30540-36-4 3,4-dimethyl-1-phenylphosphole 
• 28273-33-8 1-bromo-3,4-dimethyl-Δ³-phospholen 
• 513-81-5 2,3-dimethyl-buta-1,3-diene 
• 1073-47-8 phenyldibromophosphine 
• 628-37-5 diethyl peroxide 
• 14409-95-1 1-phenyl-3,4-dimethyl-2,5-dihydro-1H-phosphole 
• 624-83-9 methyl isocyanate 

Downstream Products

• 49595-53-1 7-furan-2-yl-4,5-dimethyl-2-phenyl-2,3-dihydro-1H-[1,2]azaphosphepine 2-oxide 
• 49595-52-0 4,5-dimethyl-2-phenyl-7-thiophen-2-yl-2,3-dihydro-1H-[1,2]azaphosphepine 2-oxide 
• 39997-72-3 (5-butyl-3,4-dimethyl-1-oxo-1-phenyl-2,5-dihydro-1H-1λ⁵-phosphol-2-yl)-phenyl-methanone 
• 39997-71-2 2-butyl-3,4-dimethyl-1-phenyl-2,5-dihydro-1H-phosphole 1-oxide 
• 31614-43-4 (3,4-dimethyl-1-oxo-1-phenyl-2,5-dihydro-1H-1λ⁵-phosphol-2-yl)-diphenyl-methanol 
• 31614-52-5 tetra-C-phenyl-C,C'-(3,4-dimethyl-1-oxo-1-phenyl-2,5-dihydro-1H-1λ⁵-phosphol-2,5-diyl)-bis-methanol 
• 39997-67-6 3,4-dimethyl-1-oxo-1-phenyl-4,5-dihydro-1H-1λ⁵-phosphole-2-carboxylic acid 
• 39997-66-5 3,4-dimethyl-1-oxo-1-phenyl-2,5-dihydro-1H-1λ⁵-phosphole-2-carboxylic acid 
• 69305-36-8 7,8-dimethyl-5-phenyl-2,2,3,3-tetrakis-trifluoromethyl-1,4-dioxa-5λ⁵-phospha-spiro[4.4]non-7-ene 
• 31614-44-5 (3,4-dimethyl-1-oxo-1-phenyl-2,3-dihydro-1H-1λ⁵-phosphol-3-yl)-phenyl-methanol 
• 69305-39-1 3',4'-dimethyl-2-phenyl-2',5'-dihydro-1'H-2λ⁵-spiro[benzo[1,3,2]dioxaphosphole-2,1'-phosphole] 
• 31614-41-2 1-(3,4-dimethyl-1-oxo-1-phenyl-2,5-dihydro-1H-1λ⁵-phosphol-2-yl)-1-phenyl-ethanol 
• 31614-39-8 2-(3,4-dimethyl-1-oxo-1-phenyl-2,5-dihydro-1H-1λ⁵-phosphol-2-yl)-propan-2-ol 
• 51285-41-7 4-(4,5-dimethyl-2-oxo-2-phenyl-2,3-dihydro-1H-2λ⁵-[1,2]azaphosphepin-7-yl)-N,N-dimethyl-aniline 

Relevant articles and documents

1,4,2-Diazaphospholidine-3,5-diones and related compounds: A lecture on unpredictability in catalysis

1,4,2-diazaphospholidine-3,5-diones and related compounds and unpredictability in catalysis was studied. The five-membered ring species 4 6, which are all readily accessible by the McCormack reaction, optionally with subsequent hydrogenation, were selected for this study. The use of saturated species of type 4 (1-organyl-phospholanes) as catalysts led to a complete reverse in the selectivity of the reaction, in favor of the formation of the isocyanate trimers. Owing to the high activity of the corresponding P-oxides in carbodiimidization reactions, it can be assumed that the findings can be attributed to partial air oxidation of the trivalent phosphorus species applied. The symmetrical species 6, in total contrast to the other two members of the series, do not exhibit any catalytic activity with respect to isocyanates and instead react cleanly with two equivalents of isocyanate to effect the extrusion of 1,3-diene.

The Reaction of 1-Substituted 3,4-Dimethyl-Δ3-phospholens with Diethyl Peroxide: a Correlation Between Rate and 31P Nuclear Magnetic Resonance Shift

The reactions of a variety of 1-X-3,4-dimethyl-Δ3-phospholens (where X=Br, Me, Ph, NMe2, SEt, H, and OR) with diethyl peroxide are described.The rates of reaction show a broad correlation with the 31P n.m.r. chemical shifts of the starting phospholens, with low field shifts corresponding to the highest reactivity.The results are discussed in terms of the biphilic mechanism for the reaction of trico-ordinate phosphorus compounds with weak ?-bonds.