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415642

Sigma-Aldrich

Ethyl phenylphosphinate

94%

Sinonimo/i:

Ethoxyphenylphosphine oxide, O-Ethyl phenylphosphinate, Phenylphosphinic acid ethyl ester

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About This Item

Formula condensata:
C6H5P(O)H(OC2H5)
Numero CAS:
2511-09-3
Peso molecolare:
170.15
Numero MDL:
MFCD11505905
Codice UNSPSC:
12352100
ID PubChem:
24866017
NACRES:
NA.22

Livello qualitativo

100

Saggio

94%

Stato

liquid

Indice di rifrazione

n20/D 1.526 (lit.)

P. ebollizione

94-95 °C/1 mmHg (lit.)

Densità

1.129 g/mL at 25 °C (lit.)

Stringa SMILE

CCO[PH](=O)c1ccccc1

InChI

1S/C8H11O2P/c1-2-10-11(9)8-6-4-3-5-7-8/h3-7,11H,2H2,1H3
UNUJZVUJPIOMGH-UHFFFAOYSA-N

Descrizione generale

Ethyl phenylphosphinate is an organophosphorous compound. It undergoes regioselective Markovnikov addition reaction with terminal alkynes in the presence of palladium-1,2-bis(diphenylphosphino)ethane complex (catalyst). Ethyl phenylphosphinate is the photodecomposition product of Inezin (S-benzyl O-ethyl phenylphosphonothiolate) on the ultraviolet irradiation. It can be prepared by the reaction of phosphinic acid with ethyl chloroformate in the presence of pyridine. Its ethylation using ethyl trimethylsilyl phenylphosphonite or the corresponding trimethylstannyl ester has been described. Its free-radical addition to ethylene has been reported to proceed with the retention of configuration.

Applicazioni

Ethyl phenylphosphinate may be used in the preparation of the following diethyl imidazol-2-yl-(amino) methylphosphonates and phosphinates:
  • imidazol-2-yl-methyl(N-butylamino)phosphonate diethyl ester
  • imidazol-2-yl-methyl(N-benzylamino)phosphonate diethyl ester
  • imidazol-2-yl-methyl(N-butylamino)phenylphosphinate ethyl ester
  • imidazol-2-yl-methyl(N-benzylamino)phenylphosphinate ethyl ester

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

235.4 °F - closed cup

Punto d’infiammabilità (°C)

113 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)

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Certificati d'analisi (COA)

Lot/Batch Number
MKCN5235
MKCN0262
MKCC6599
MKBW4101V
MKBR6447V

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Preparation of new imidazol-2-yl-(amino) methylphosphonates, phosphinates and phosphine oxides and their unexpected cleavage under acidic conditions.
Boduszek B, et al.
Tetrahedron, 68(4), 1223-1229 (2012)
T Murai et al.
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 11(2), 185-197 (1976-01-01)
The photodecomposition of Inezin (S-benzyl O-ethyl phenylphosphonothiolate) in n-hexane under the ultraviiolet irradiation was investigated by gas liquid chromatography, thin layer chromatography, mass spectrometry, and infrared spectroscopy. Two main steps of photodecomposition were observed at the initial stage of irradiation.
Stereochemistry of a Michaelis-Arbusov reaction: alkylation of optically active ethyl trimethylsilyl phenylphosphonite with retention of configuration.
Van den Berg GR, et al.
Journal of the Chemical Society. Chemical Communications, 12, 606-607 (1971)
Organophosphorus compounds. II. Ethyl phenylphosphinate.
Hewitt DG.
Australian Journal of Chemistry, 32(2), 463-464 (1979)
Satish Kumar Nune et al.
Chemical communications (Cambridge, England), (27)(27), 2858-2860 (2007-07-05)
Palladium-1,2-bis(diphenylphosphino)ethane complex catalyses regioselective Markovnikov addition of ethyl phenylphosphinate to terminal alkynes in toluene, while the use of tri-tert-butylphosphine as the ligand or ethanol as the solvent leads to regioselectivity reversal.

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