Dichlorophenylphosphine

• Dichloro (phenyl ) phosphine
• Dichlorophenylphosphine
• Phenyldichlorophosphine
• Phenylphosphordichlorid

Colorless liquid with a pungent odor

Liquid

1.32 g · cm -3 ( 20 ° C)

-51 ° C

225 ° C

Decomposition with water, miscible with benzene, chloroform and carbon disulfide

1.5962

Risk

200 mg · kg -1 ( LD50, rat, oral)

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Dichloride is a chemical compound from the group of phosphanes. She wears a phenyl group and two chlorine atoms on the central phosphorus bound.

Production

For the synthesis of dichlorophenylphosphine the reaction between phosphorus trichloride can be used with benzene in the presence of aluminum chloride. The reaction is similar to a Friedel-Crafts acylation. The Lewis acid aluminum chloride initially activated phosphorus, thus enabling the following electrophilic attack on the benzene.

Properties

Dichloride is a colorless liquid with a pungent odor with a melting point of -51 ° C and a boiling point of 225 ° C. With water it decomposes to form hydrogen chloride.

Use

Dichloride can be used for the synthesis of chlorodiphenylphosphine. At temperatures above 280 ° C and phosphorus trichloride dichloride disproportionating to chlorodiphenylphosphine.

The reduction of the compound by means of lithium aluminum hydride in diethyl ether yields the phenylphosphane.