My PhD dissertation - Institut Fresnel
My PhD dissertation - Institut Fresnel
My PhD dissertation - Institut Fresnel
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R<br />
P<br />
N R<br />
24a - 24d<br />
30<br />
HCl / DEE 4.8 M<br />
- 75 °C to 25 °C<br />
Cl<br />
R<br />
P<br />
R<br />
25a - 25d<br />
Table 3. Dialkylchlorophosphines R2PCl.<br />
Product R = Yield<br />
25a -C(CH3)3 79%<br />
[ ] 150<br />
25b -C4H9 86% [147]<br />
25c -C2H5 64%<br />
25d -CH3 47%<br />
Mixed tertiary phosphines bearing two different alkyl groups were then<br />
prepared either from chlorophosphines 25a - 25d or from chlorodicyclohexylphosphine<br />
(25e) or Chlorodiisopropylphosphine (25f). The latter two chlorophosphines 25e and 25f<br />
were prepared according to a procedure described by W. Voskuil and J.F. Arens<br />
Treatment of these chlorophosphines with the suitable organometallic reagent afforded a<br />
series of mixed trialkyl phosphines 26a - 26k with moderate to good yields (Table 4).<br />
Cl<br />
R<br />
P R<br />
25a - 25f<br />
R 'Li or R 'MgX<br />
DEE or THF, - 75 °C<br />
R '<br />
[ ] 151<br />
[ ] 152<br />
R<br />
P R<br />
26a - 26k<br />
[ ] 153 .