33892-95-4

Basic information

• Product Name: 2-methoxy-4-methyl-1,3,2-dioxaphosphinane
• Synonyms: 2-Methoxy-4-methyl-1,3,2-dioxaphosphorinane
• CAS NO: 33892-95-4
• Molecular Formula: C₅H₁₁O₃P
• Molecular Weight: 150.1128
• Mol File: 33892-95-4.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 128.7°C at 760 mmHg
• Flash Point: 29.8°C
• Vapor Pressure: 12.8mmHg at 25°C
• CAS DataBase Reference: 2-methoxy-4-methyl-1,3,2-dioxaphosphinane(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methoxy-4-methyl-1,3,2-dioxaphosphinane(33892-95-4)
• EPA Substance Registry System: 2-methoxy-4-methyl-1,3,2-dioxaphosphinane(33892-95-4)

Safety Data

• Hazardous Substances Data: 33892-95-4(Hazardous Substances Data)

Upstream product

• 110-86-1 pyridine 
• 67-56-1 methanol 
• 6362-87-4 2-Chloro-4-methyl-1,3,2-dioxaphosphorinane 
• 121-69-7 N,N-dimethyl-aniline 
• 128592-04-1 2-(1-imidazolyl)-4-methyl-1,3,2-dioxaphosphorinane 
• 18826-95-4 1.3-butanediol 
• 121-45-9 phosphorous acid trimethyl ester 
• 685-83-6 bis(diethylamino)chlorophosphine 

Downstream Products

• 874528-64-0 2-benzyl-4-methyl-[1,3,2]dioxaphosphinane-2-oxide 
• 51851-51-5 (4-Methyl-2-oxo-2λ⁵-[1,3,2]dioxaphosphinan-2-yl)-phenyl-methanone 
• 854843-91-7 4-methyl-2-trityl-[1,3,2]dioxaphosphinin-2-oxide 

Relevant articles and documents

TRIVALENT PHOSPHOROUS ACID IMIDAZOLIDES

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KINETIC STUDY OF THE HORNER-REACTION. I

The rates of the Horner-reaction of five phosphonates (I-V) with sodium ethoxide and various p- and m-substituted benzaldehydes, and ethanol as solvent, are reported.The kinetics of the reactions are overall third order, first order in phosphonate, ethoxide, and aldehyde, respectively.The reaction is accelerated by electron-withdrawing substituents in the benzaldehyde, giving a reaction constant, ρ, of approximately +2.0.The five-membered cyclic phosphonate (IV) is found to react about 20 times faster than its acyclic analogue (I).The rate difference is attributed to a considerable release in ring strain upon passing from the tetrahedral to the pentacoordinate state in the intermediate of the cyclic phosphonate.