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35948-25-5

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Basic Information
CAS No.: 35948-25-5
Name: 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide
Article Data: 10
Molecular Structure:
Molecular Structure of 35948-25-5 (9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide)
Formula: C12H9O2P
Molecular Weight: 216.176
Synonyms: 3,4:5,6-Dibenzo-2H-1,2-oxaphosphorin-2-oxide;9,10-Dihydro-9-oxa-10-phosphaphenanthren-10-oxide;9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide;9,10-Dihydro-9-oxa-10-phosphorylphenanthrene-10-oxide;
EINECS: 252-813-7
Melting Point: 119 °C
Boiling Point: 399.658 °C at 760 mmHg
Flash Point: 206.441 °C
Solubility: 3.574g/L at 25℃
Risk Codes: 36/37/38
Safety: 26-36/37/39
PSA: 49.77000
LogP: 2.84600
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Synthetic route
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p-chlorodibenzo[c.e][1,2]oxaphosphorine

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Conditions
ConditionsYield
With water; hydrogenchloride at 80℃; for 1h; Product distribution / selectivity;98%
With water In toluene for 4h; Heating / reflux;95%
In ethanol
With water
With water10.1 g
35948-24-4

2-(2-hydroxyphenyl)-phenylphosphonous acid

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Conditions
ConditionsYield
With toluene-4-sulfonic acid In water; toluene for 4h; Reflux;97.5%
at 160℃; under 30 Torr; for 2h; Activation energy; Cyclization;
at 160℃; under 30 Torr; for 2h; Dehydration;
at 180℃; under 3.75038 Torr; for 6h; Pressure; Temperature;
33771-47-0

2-Phenylphen-1-oxydichlorphosphan

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: AlCl3 / heptane
2: aq. ethanol
View Scheme
22749-43-5

p-chlorodibenzo[c.e][1,2]oxaphosphorine

90-43-7

2-Phenylphenol

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Conditions
ConditionsYield
In toluene
1208129-37-6

1-propylammonium (2-hydroxy-biphenyl-2-yl)-phosphinate

A

107-10-8

propylamine

B

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Conditions
ConditionsYield
at 165℃; under 3.75038 Torr; for 2.25h;
90-43-7

2-Phenylphenol

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: trifluorormethanesulfonic acid; phosphorus trichloride / 4.5 h / 150 °C
2: water
View Scheme
Multi-step reaction with 3 steps
1.1: phosphorus trichloride; zinc(II) chloride / 4 h / 80 - 180 °C
2.1: diatomaceous earth / toluene / 0.5 h / 20 °C
2.2: 4 h / Reflux
3.1: 6 h / 180 °C / 3.75 Torr
View Scheme
35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

32186-92-8

6-Chloro-6H-dibenz<1,2>oxaphosphorin

Conditions
ConditionsYield
With chlorine; sodium hydroxide In dichloromethane at 20℃; for 12.6h; Inert atmosphere; Large scale;100%
With chlorine In dichloromethane at 40℃; for 5h; Appel Halogenation;100%
With tetrachloromethane; triethylamine In chloroform at 5℃;

hexaepoxypropanoxycyclotriphosphazene

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

C90H84N3O24P9

Conditions
ConditionsYield
at 160℃; for 5h; Temperature; Time;99.8%
4645-32-3

dimethylvinylphosphonate

35948-25-5

9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide

2-(9,10-dihydro-9-oxo-10-phosphaphenanthrene-10-oxide-10-yl)dimethyl ethylphosphonate

Conditions
ConditionsYield
at 130℃; for 8h; Inert atmosphere;99.38%
With trimethylphosphane In tetrahydrofuran at 0 - 25℃; for 20.5h; Schlenk technique;90%
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N,N-bis(2-((trimethylsilyl)oxy)ethyl)acrylamide

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3-(6-oxido-6H-dibenzo[c,e][1,2]oxaphosphinin-6-yl)-N,N-bis{2-[(trimethylsilyl)oxy]ethyl}propanamide

Conditions
ConditionsYield
With triethylamine In toluene Michael addition; Inert atmosphere; Reflux;99%
Raw Materials
22749-43-5
90-43-7
Downstream Products
35948-26-6
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Chemistry


IUPAC Name: Benzo[c][1,2]benzoxaphosphinin-6-ium 6-oxide
Molecular Formula: C12H9O2P
Molecular Weight: 216.17 g/mol
Canonical SMILES: c12c3c([P@@](=O)Oc1cccc2)cccc3
InChI: InChI=1/C12H9O2P/c13-15-12-8-4-2-6-10(12)9-5-1-3-7-11(9)14-15/h1-8,15H
EINECS: 252-813-7
Product Categories: Industrial/Fine Chemicals
Flash Point: 206.441 °C
Enthalpy of Vaporization: 62.506 kJ/mol
Boiling Point: 399.658 °C at 760 mmHg
Melting Point: 119 °C
Vapour Pressure of 6H-Dibenz[c,e][1,2]oxaphosphorin 6-oxide (CAS NO.35948-25-5): 0 mmHg at 25 °C

Safety Profile

Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements of 6H-Dibenz[c,e][1,2]oxaphosphorin 6-oxide (CAS NO.35948-25-5): 26-36/37/39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.

Specification

  6H-Dibenz[c,e][1,2]oxaphosphorin 6-oxide (CAS NO.35948-25-5), its Synonyms are 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide ; 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide ; 3,4:5,6-dibenzo-1,2-oxaphosphane-2-oxide ; 9,10-dihydro-9-oxa-10-phospaphenanthrene- .