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Author Topic: PCy3  (Read 2045 times)

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franz

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PCy3
« on: May 29, 2012, 09:50:21 AM »

Dear chemicals

I ask help on how to oxidize PCy3.

soon
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sjb

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Re: PCy3
« Reply #1 on: May 29, 2012, 11:26:41 AM »

Dear chemicals

I ask help on how to oxidize PCy3.

soon

Oxidise it to what?
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cheese (MSW)

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Re: PCy3
« Reply #2 on: May 29, 2012, 03:00:44 PM »

PCy3 will convert immediately to Cy3P=O on exposure to air [STREM says it is just air-sensitive; not pyrophoric unlike PMe3].  The oxide is much less soluble in hexanes: so you devise a procedure using Schlenk techniques.
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cheese (MSW)

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Re: PCy3
« Reply #3 on: May 30, 2012, 12:19:52 PM »

PS: Follow by IR Me3P=O ν(P=O) = 1176; Ph33P=O ν(P=O) = 1190 cm^-1;
Cy3P=O should be be air-stable (Ph3PO is a rock!) Recrystallized from minimum
CH2Cl2/hexanes (freezer).
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franz

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Re: PCy3
« Reply #4 on: June 07, 2012, 11:21:41 PM »

Thank you so much cheese (MSW)

then I would be in the box PCy3 oxide that does not rust, so I have to separate them by a recrystallization true? . Lacking CH2Cl2/hexanes (freezer) as an alternative to what can I use?
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