Dimethylbisdiphenylphosphinoxanthene CAS 161265-03-8

Product Description:

Product Name: Dimethylbisdiphenylphosphinoxanthene CAS NO: 161265-03-8

Synonyms:

(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine);

(5-diphenylphosphanyl-9,9-dimethylxanthen-4-yl)-diphenylphosphane;

9,9-Dimethyl-4,5-bis(diphenylphosphino)xanthene;

Chemical & Physical Properties:

Appearance: White to light yellow crystals

Assay :≥99.0%

Boiling Point: 665.7℃ at 760 mmHg

Melting Point: 226-230℃

Flash Point: 449.9℃

Vapor Pressure: 7.61E-17mmHg at 25℃

Storage Temp.: Room temperature

Solubility: Soluble in organic solvents

Safety Information:

Hazard Code: Xn

HS Code: 2932999099

WGK Germany: 3

Risk Statement: R37

Safety Statements: S37/39-26

Xantphos is an organophosphorus compound derived from the heterocycle xanthene. It is used as a bidentate ligand and is noteworthy for having a particularly wide bite angle. Such ligands are useful in the hydroformylation of alkenes. Illustrative of its wide bite angle, it forms both cis and trans adducts of platinum(II) chloride. A related bidentate ligand with a greater bite angle is spanphos.

The ligand is prepared by double directed lithiation of 9,9-dimethylxanthene with sec-butyllithium followed by treatment with chlorodiphenylphosphine.

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