1,5-Bis(diphenylphosphino)pentane
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1,5-Bis(diphenylphosphino)pentane
structure -
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CAS No:
27721-02-4
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Formula:
C29H30P2
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Chemical Name:
1,5-Bis(diphenylphosphino)pentane
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Synonyms:
98% Ph2P(CH2)5PPh2;1,5-bis(diphenylphosphino)pent;DPPENT;5-diphenylphosphanylpentyl(diphenyl)phosphane;1,5-BIS(DIPHENYLPHOSPHINO)PENTANE;DPPPE;PENTAMETHYLENEBIS(DIPHENYLPHOSPHINE);1,5-Bis(diphenyphosphino)Pentane
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CAS No:
1,5-Bis(diphenylphosphino)pentane Basic Attributes
440.5
440.182281
1312995-182-4
DTXSID80369900
29319090
Characteristics
0
6.9
White to light yellow Powder to Crystals or Chunks
43-47 °C(lit.)
230 C
>230 °F
soluble in N,N-dimethyl formamide.
Safety Information
NONH for all modes of transport
3
36/37/38-10
26-37/39-36-16
Xi,F
P261-P305 + P351 + P338
H315-H319-H335
|Warning|H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 44 companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
1,5-Bis(diphenylphosphino)pentane Use and Manufacturing
General Procedure: A 2 l four-necked flask equipped with an effective condenser, a stirrer and a dropping funnel was filled with 500 ml of dry THF which was then deoxygenated for 1 h by transmitting of dry nitrogen. Then 100 g (0.382 mol) of triphenylphosphine was added, and the mixture was stirred till a clear solution was obtained, wherein 6 g (0.856 mol) of freshly prepared ultra-fine lithium flushed with THF was added a little at a time in high purity argon current. The addition rate of the lithium was limited by keeping an exothermic reaction temperature below 50 °C. When the loading of the lithium was completed, the resultant crimson solution was cooled to 0 °C, and a solution of 50 g (0.442 mol) of 1, 3-dichloropropane or 62.3 g (0.442 mol) of 1, 5-dichloropentane in 50 ml of THF was added by drops to the reaction mass with the temperature kept at 0 °C. When dripping was over, the color of the reaction mass turned light-brown. The mixture was boiled at the flask temperature of 80 °C for 3 h. After the mixture got self-cooled to room temperature, 750 ml of deoxygenated methanol was added to it. The mass was cooled to 0 °C, and 125 ml of oxygen-free water was rapidly added by drops into a vigorously stirred mass. The suspension of the deposited diphosphines 1 or 2 was settled at 0 °C for a short time possible, a solution was decanted from them. The residuum was filtered under nitrogen, rinsed with 5 x 25 ml of cold diethyl ether and dried in vacuum for 20 h. Obtained: 21.54 g (yield 35percent as compared with Ph
Computed Properties
Molecular Weight:440.5
XLogP3:6.9
Rotatable Bond Count:10
Exact Mass:440.18227495
Monoisotopic Mass:440.18227495
Heavy Atom Count:31
Complexity:375
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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1,5-Bis(diphenylphosphino)pentane
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