The use of ultrasonic activation in Michaelis-Arbuzov reaction promote a by-product in the case of silyl derivatives and in the synthesis of methylene diphosphonate. A mechanism is proposed in which the phosphite give a nucleophilic attack on the quasiphosphonium ion in place of the halide species.
The present invention provides a non-aqueous electrolyte solution which contains a silyl ester group-containing phosphonic acid derivative.
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(2013/03/28)
B(C6F5)3-catalyzed silylation versus reduction of phosphonic and phosphinic esters with hydrosilanes
HSiR3/cat-B(C6F)3 induced dealkylation or reduction of esters of phosphorus at 20°C. A specific conversion to silylesters occurred by reaction with tertiary silanes. In contrast, free phosphines were observed in the reaction with mono- or disubstituted silanes. A mechanism was proposed to rationalize these results.
Microwave irradiation in organophosphorus chemistry 1: The Michaelis-Arbuzov reaction
A diverse series of phosphonate esters have been prepared using a domestic microwave oven. The microwave enhanced Michaelis-Arbuzov reaction shows remarkable rate acceleration under microwave irradiation and allows the facile synthesis, and in certain cases easy workup, of alkyl, α-substituted and aryl phosphonates.
Kiddle, James J.,Gurley, Alison F.
p. 195 - 205
(2007/10/03)
PHOSPHORYLATION OF DISILYLATED CARBOXAMIDES
The reaction of phosphorus(III) acid chlorides and dichlorides with disilylated carboxamides leads to the formation of mono- and bis-(trimethylsilyl)phosphites.The reactions of diethyl phosphorochloridate, O,O-diethyl phosphorochloridothioate, methylphosphonic dichloride, and phosphoryl chloride with disilylated acetamide proceed with the replacement of chlorine atoms by trimethylsiloxy groups.It was shown that β breakdown can occur in the P(S)-N=P-OSiMe3.
Pudovik, M. A.,Kibardina, L. K.,Pudovik, A. N.
p. 960 - 964
(2007/10/02)
PHOSPHORYLATION AND SILYLATION OF DIETHANOLAMINE AND N-(β-HYDROXYALKYL)-o-AMINOPHENOLS
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Pudovik, M. A.,Terent'eva, S. A.,Pudovik, A. N.
p. 2185 - 2188
(2007/10/02)
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