The synthesis of the precursor phenylthiomethyl-functionalized carbosilane dendrimers
Si[(CH2)3SiMe2CH2SPh]4 (1) and Si{(CH2)3Si[(CH2)3SiMe2CH2SPh]3}4 (2) is described. Reacting 1 and 2 with lithium naphthalenide gives the first lithiomethyl-functionalized dendrimers
Si[(CH2)3SiMe2CH2Li]4 (7) and Si{(CH2)3Si[(CH2)3SiMe2CH2Li]3}4 (11). Deutero, trimethylsilyl, trimethylstannyl, and tri-n-butylstannyl derivatives of these dendrimers, as well as a
method to enable isolation of the lithiated dendrimers as solids, are described.
A method is described for the determination of the saponification values of waxes using microwaves in place of conventional
heating. Statistical analysis shows that the new method gives
the same results as the conventional method in spite of a
dramatically shortened analysis time.
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