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Syntheses and fluoride-ion-mediated hydrolysis of phosphoroselenoic acid ester and amides

✍ Scribed by Toshiaki Murai; Shinsuke Inaji; Tohru Takenaka

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
149 KB
Volume
20
Category
Article
ISSN
1042-7163

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✦ Synopsis

Phosphoroselenoic acid ester and amides containing binaphthoxy moiety were prepared by reacting phosphoroselenoyl chloride with alcohols and secondary amines. The resulting amides underwent fluoride-ion-mediated hydrolysis with a THF solution of tetrabutylammonium fluoride to give two types of phosphoroselenoic acid ammonium salts: one with a fluorine atom and another with a binaphthoxy group on the phosphorus atom. The ratio of these products depended on the substituents on the nitrogen atom of the amides. A similar reaction of the ester with tetrabutylammonium fluoride gave two types of ammonium salts. The formation of these products was confirmed by converting them to the corresponding methyl esters.

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Lanthanide ion-induced hydrolyses of alk
Lanthanide ion-induced hydrolyses of alkyl esters and amides of Ξ±-amino acids
✍ Tohru Takarada; Rei Takahashi; Morio Yashiro; Makoto Komiyama πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 124 KB πŸ‘ 1 views

Lanthanide ion-induced hydrolyses of methyl esters, ethyl esters, and amides of a-amino acids were systematically studied. In the hydrolysis of the alkyl esters, all the lanthanide ions are effective and the catalytic activities decrease in the order Ce(III), Nd(III) b Sm(III) b Eu(III) b Gd(III), C