ChemicalBook CAS DataBase List 4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene

4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene synthesis

4synthesis methods

Product Name:4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene
CAS Number:161265-03-8
Molecular formula:C39H32OP2
Molecular Weight:578.62

67-64-1
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166330-10-5 Synthesis

(OXYDI-2,1-PHENYLENE)BIS(DIPHENYLPHOSPHINE)

166330-10-5
318 suppliers
$9.00/1g

4,5-Bis(diphenylphosphino)-9,9-dimethylxanthene

161265-03-8
455 suppliers
$6.00/1g

Yield:161265-03-8 95%

Reaction Conditions:

with trifluorormethanesulfonic acid in toluene at 200; for 16 h;Inert atmosphere;Temperature;

Steps:

1; 2; 3 Example 3

Under argon protection, bis(2-diphenylphosphinophenyl)ether (Compound 2) 538 g, toluene solvent was added to the reaction vessel.700 mL, 8.8 mL of trifluoromethanesulfonic acid, 150 mL of acetone, the reaction system was heated to 200 °C, and after 16 h of reaction, it was reduced toAt room temperature, after extraction, drying and recrystallization, the desired product 4,5-bisdiphenylphosphino-9,9-dimethyloxaxan (Compound 1) is obtained.549 g (yield 95%).

References:

CN109942631,2019,A Location in patent:Paragraph 0005; 0008-0009

19814-75-6 Synthesis