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Polymer supported naphthalene-catalysed lithiation reactions

✍ Scribed by Cecilia Gómez; Sonia Ruiz; Miguel Yus

Book ID
104258642
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
309 KB
Volume
39
Category
Article
ISSN
0040-4039

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✦ Synopsis

The reaction of functional&d mono or dichlorinated materials la-6a with an excess of lithium and a catalytic amount of a napbthalene supported polymer (P-152, easily prepared by radical copolymerisation of 2_vinylnaphthalene, styrene and divinylbenzene) in THF either in the presence (Barbier-type conditions) or not of different electropbiles [Me$iCl, BuWHO, BuiCHO, PhCHO, EtzCO, c(C3H5hCO. P&CO, (CH2)4CO, (CH&CO, PhCOMe, PhCH=NPh] leads, after hydrolysis, to the expected products lc-6c. The catalyst is quantitatively recovered and can be reused several times without any loss of its activity.

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