31121-06-9

Basic information

• Product Name: 2-methoxy-1,3,2-dioxaphosphinane
• Synonyms: 1,3,2-Dioxaphosphorinane, 2-methoxy-
• CAS NO: 31121-06-9
• Molecular Formula: C₄H₉O₃P
• Molecular Weight: 136.0862
• Mol File: 31121-06-9.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 111.1°C at 760 mmHg
• Flash Point: 16.1°C
• Vapor Pressure: 27.1mmHg at 25°C
• CAS DataBase Reference: 2-methoxy-1,3,2-dioxaphosphinane(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methoxy-1,3,2-dioxaphosphinane(31121-06-9)
• EPA Substance Registry System: 2-methoxy-1,3,2-dioxaphosphinane(31121-06-9)

Safety Data

• Hazardous Substances Data: 31121-06-9(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 38432-39-2 2-diethylamino-1,3,2-dioxaphosphorinane 
• 3279-26-3 methyl dichlorophosphite 
• 504-63-2 trimethyleneglycol 
• 6362-89-6 2-chloro-1,3,2-dioxaphosphinane 
• 139882-68-1 1-imidazolyl trimethylene phosphite 
• 121-45-9 phosphorous acid trimethyl ester 

Downstream Products

• 130284-07-0 (E)-3-Methyl-4-(2-oxo-2λ⁵-[1,3,2]dioxaphosphinan-2-yl)-but-2-enoic acid ethyl ester 
• 75619-20-4 7-(2.6-Dimethylphenyl)-6-methoxy-8-phenyl-10.10-bis(trifluormethyl)-1.5-dioxa-7.9-diaza-6-phosphaspiro<4.5>dec-8-en 
• 75619-21-5 6-Methoxy-8-phenyl-10.10-bis(trifluormethyl)-7-(2.4.6-trimethylphenyl)-1.5-dioxa-7.9-diaza-6-phosphaspiro<4.5>dec-8-en 
• 74658-27-8 (C₅H₅)Co(C₄P)(C₆H₅)4(O)OCH₂CH₂CH₂OH 
• 74741-60-9 (C₅H₅)Co(C₄P)(C₆H₅)4(O)OCH₃ 
• 74666-75-4 (C₅H₅)Co(C₄P)(C₆H₅)4(O)OCH₃ 
• 13507-10-3 trimethylene hydrogen phosphate 
• 35026-64-3 2-trityl-[1,3,2]dioxaphosphinane-2-oxide 

Relevant articles and documents

Cyclic Phosphorylation Reaction of Diols with Tri(1-imidazolyl)phosphine

Tri(1-imidazolyl)phosphine (1) gave the cyclic phosphite quantitatively in the reactions with the diols possessing favorably placed hydroxyl groups in which the distance between the two oxygen atoms is 2.7-3.0 Angstroem.The both five- and six-membered cyclic phosphites were obtained quantitatively from the reactions of the diols possessing flexible chains with 1.The course of the selective formation of ribonucleoside 2',3'-cyclic 1-imidazolylphosphonite was interpretated by the higher reactivity of 1 toward the 2'- or 3'-hydroxyl group than toward the 5'-hydroxyl group of ribonucleoside.

Synthesis and antihypertensive activities of 1,4-dihydropyridine-5-phosphonate derivatives. II

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Effects of Molecular Structure on basicity. Gas-Phase Proton Affinities of Cyclic Phosphites

The proton affinities of several monocyclic and bicyclic phosphite esters are determined by ion cyclotron resonance spectroscopy.The order of proton affinities is identical with the solution basicity order reported earlier.Thus, increasing steric constraint decreases the proton affinity of the phosphorus lone pair in phosphites.Moreover, the phosphorus lone pair in monocyclic six-membered-ring phosphites is more basic in the axial than in the equatorial position.Adiabatic ionization potentials are obtained from photoelectron spectra of the phosphites.Increases in ionization potential are found to parallel decreases in proton affinity.This relationship between the ionization potential and proton affinity suggests that the first ionization potential of the phosphites corresponds to ionization from the phosphorus lone pair orbital.These trends are rationalized in terms of changes in the interactions of the oxygen lone pair orbitals with the phosphorus lone pair and ?-bonding orbitals.