Alkyl phosphates, reaction with compounds

It is in the very nature of the catalytic process that the intermediate compound formed between catalyst and reactant is of extreme lability therefore not many cases are on record where the isolation by chemical means, or identification by physical methods, of intermediate compounds has been achieved concomitant with the evidence that these compounds are true intermediaries and not products of side reactions or artifacts. The formation of ethyl sulfuric acid in ether formation, catalyzed by HjSO , and of alkyl phosphates in olefin polymerization, catalyzed by liquid phosphoric acid, are examples of established intermediate compound formation in homogeneous catalysis. With regard to heterogeneous catalysis, where catalyst and reactant are not in the same... 

Product of reaction of ammonia with P2Os Organophosphorus compounds Tricresyl phosphate Alkyl phosphates Haloalkyl phosphates... 

The F-alkyl ketone enolates were readily prepared by dephosphorylation of the corresponding 1-substituted F-l-aUcenyl phosphates with DIBAL at 0°C for a few minutes (Scheme 6.29) [50]. The resulting diisobutylaluminum enolate undergoes aldol reaction with benzaldehyde to give fhe -hydroxycarbonyl compound in a reasonable yield. 

Some inorganic esters of CDs, such as nitrates, sulfates, phosphates etc. have also been synthesized however, the organic (acetyl, benzoyl, propionyl, methyl and carbamoyl) esters have been more frequently used for practical industrial and analytical purposes [6,8]. Ether derivatives are the most important CD derivatives from a practical point of view. These compounds can be prepared either by direct reaction with an alkylating agent or via an intermediate, such as sulfonate esters... 

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