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Dimethylphosphine oxide

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Name

Dimethylphosphine oxide

EINECS 230-591-2
CAS No. 7211-39-4 Density N/A
PSA 40.54000 LogP 0.80570
Solubility N/A Melting Point N/A
Formula C2H7OP Boiling Point 84.5 °C at 760 mmHg
Molecular Weight 78.0507 Flash Point 4.906 °C
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 7211-39-4 (DIMETHYLPHOSPHINE OXIDE) Hazard Symbols N/A
Synonyms

Dimethylphosphine oxide;

Article Data 19

Dimethylphosphine oxide Synthetic route

75-16-1

methylmagnesium bromide

762-04-9

phosphonic acid diethyl ester

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
In tetrahydrofuran at 0 - 20℃; for 16h; Inert atmosphere;88.79%
In tetrahydrofuran; diethyl ether at 0 - 20℃; for 0.5h; Inert atmosphere;63.66%
In tetrahydrofuran at 0 - 20℃; for 5h;
676-58-4

methylmagnesium chloride

762-04-9

phosphonic acid diethyl ester

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With potassium carbonate In tetrahydrofuran at 0℃; for 4h;81.39%
In tetrahydrofuran Ambient temperature;80%
In tetrahydrofuran at 30℃; for 1h; Cooling with ice;70.8%
In tetrahydrofuran at 20 - 30℃; for 1h; Cooling with ice;70.8%
(i) THF, (ii) aq. K2CO3; Multistep reaction;
74-87-3

methylene chloride

A

16394-14-2

dimethylphosphinic acid sodium salt

B

2914-38-7, 20677-21-8, 20677-23-0

methylphosphonic acid disodium salt

C

7211-39-4

dimethyl phosphine oxide

D

87930-22-1

methylphosphonous acid sodium salt

Conditions
ConditionsYield
With sodium hydroxide; phase transfer catalyst; phosphorous Further byproducts given;A 0.5%
B 3.5%
C 5%
D 72%
676-58-4

methylmagnesium chloride

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
Stage #1: methylmagnesium chloride With phosphonic acid diethyl ester In tetrahydrofuran at 20 - 30℃; for 1h;
Stage #2: With potassium carbonate In tetrahydrofuran; water
70.8%
With phosphonic acid diethyl ester In tetrahydrofuran at 0 - 20℃; for 5h;
121-45-9

phosphorous acid trimethyl ester

A

512-56-1

trimethyl phosphite

B

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With Bromotrichloromethane In neat (no solvent) at 25℃; for 0.5h;A 4%
B 50%
77-78-1

dimethyl sulfate

A

676-96-0

Trimethylphosphine oxide

B

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With phosphorus; potassium hydroxide; N-benzyl-N,N,N-triethylammonium chloride In 1,4-dioxane at 60 - 62℃;A 7%
B n/a
683-84-1

(dimethylamino)dimethylphosphine

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With water
20502-88-9

dimethylmethoxyphosphines-d0

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With water at -10℃;
35449-60-6

dimethyl methylthiophosphinite

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With water
685-93-8

N,N-diethylamino-P,P-dimethylphosphine

7211-39-4

dimethyl phosphine oxide

Conditions
ConditionsYield
With water

Dimethylphosphine oxide Specification

The systematic name of this chemical is dimethylphosphane oxide. With the CAS registry number 7211-39-4 and EINECS 230-591-2, it is also named as phosphorane, dimethyl-, oxide. In addition, the formula is C2H7OP and the molecular weight is 78.05.

The other characteristics of Dimethylphosphine oxide can be summarized as: (1)ACD/LogP: -2.23; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 1; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 0; (6)Polar Surface Area: 40.54 Å2; (7)Flash Point: 4.906 °C; (8)Enthalpy of Vaporization: 31.144 kJ/mol; (9)Boiling Point: 84.5 °C at 760 mmHg; (10)Vapour Pressure: 80.598 mmHg at 25°C.

People can use the following data to convert to the molecule structure. 
1. SMILES:CP(C)=O
2. InChI:InChI=1/C2H7OP/c1-4(2)3/h4H,1-2H3
3. InChIKey:HGDIHUZVQPKSMO-UHFFFAOYAJ
4. Std. InChI:InChI=1S/C2H7OP/c1-4(2)3/h4H,1-2H3
5. Std. InChIKey:HGDIHUZVQPKSMO-UHFFFAOYSA-N

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