Chlorodiphenylphosphine → HCID 5017640, compound

HRID 1274376Notes

Reaction equation

[CH:1]1([Tl])[CH:5]=[CH:4][CH:3]=[CH:2]1.[C:7]1([P:13]([C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)Cl)[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>C(OCC)C>[C:15]1([P:13]([C:2]2[CH2:1][CH:5]=[CH:4][CH:3]=2)[C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=2)[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1

Participants

Conditions

Temperature: 0 °C

Procedure

50 g (0.186 mol) of cyclopentadienyl-thallium (obtained from Fluka) were introduced together with 300 ml of diethyl ether into a 500 ml flask. The suspension was cooled to 0° C. and 34.2 ml (0.186 mol) of diphenylchlorophosphine were added dropwise in the course of 10 minutes. The suspension was then warmed to room temperature and stirred for one hour, and finally filtered through a frit. The solvent was then stripped off in vacuo and left behind 39.5 g (85% of the theoretical yield) of the intermediate product diphenylphosphino-cyclopentadiene, compound 5. A content of 18.6 g (0.074 mol) of the compound 5 was then diluted with toluene and cooled to 0° C. 33.2 ml of a 2.24 molar solution of butyl-lithium in hexane (0.074 mol) were added to this solution in the course of 10 minutes. After warming to room temperature and after stirring for 2 hours, the yellow solution gave a precipitate, which was filtered off and washed with toluene and then with hexane. After drying in vacuo, 13.2 g of the compound 6 (70% of the theoretical yield) were obtained as a brownish powder (cf. J. Am. Chem. Soc. 105 (1983), 3882; Organometallics 1 (1982), 1591).

Workup

temperatureThe suspension was then warmed to room temperature
filtrationfinally filtered through a frit
waitleft behind 39.5 g (85% of the

Sources & evidence

ORD record: ord-725e6f25781247bb8aa854165fdfb913
Source dataset: uspto-grants-2000_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06156857

Reaction notes

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