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Diphenylphosphine oxide

Product Name: Diphenylphosphine oxide

Specifications: ≥99%.

Lot number:

Net weight: 25kg/drum

Manufacturer: Shandong Hongchuan Chemical Co., Ltd

CAS Number: 4559-70-0, Diphenylphosphonus; Diphenylphosphine oxide; Diphenylphosphine oxide; Diphenylphosphine oxygen

Molecular formula: C12H11OP

Molecular Weight: 202.1804         

A chemical reagent commonly used in laboratories.

Physical properties

Melting point: 56~57 °C (lit.).

Boiling point: 377 °c

Flash point: 153°c

Refractive index: 1.608-1.61

Morphology: crystalline

Color: White

Water solubility: slightly soluble in water

Sensitivity: It has strong moisture absorption

Storage method:

Protect from light, ventilated and dry place, sealed and stored

Main Uses

Diphenylphosphine oxide [Ph2P(O)H] is commonly used in the preparation of triphenylphosphine oxide, enyldiphenylphosphine oxide, addition to alkynes, and Wittig-Horner reaction reagents.

Synthesis of diphenylphosphine derivatives Ph2P(O)H is coupled with aryl trifluoromethanesulfonate, and phosphine oxide is reduced to obtain diphenylarylphosphine, which is a commonly used chiral ligand. Ph2P(O)H reacts with TMSCl to obtain trimethylsiloxydiphenylphosphine, which reacts with halogenated olefins to obtain enyldiphenylphosphine oxide (Equation 2)[4]. Addition to alkynes Under metal catalysis, the addition of diphenylphosphine oxide to alkynes produces highly stereospecific olefin compounds (Equation 3) [5,6]. Addition with olefins Under microwave conditions, diphenylphosphine oxide is able to undergo addition reaction with olefins without the need for any solvent or catalyst (Equation 4) [7]. Reaction with difluoromonochloromethane Ph2P(O)H reacts with difluorodichloromethane to prepare difluoromethyldiphenylphosphine oxide, which further reacts with aldehydes or ketones to form 1,1-difluoroolefins.