Livantsov, M. V.; Prishchenko, A. A.; Lutsenko, I. F., Journal of general chemistry of the USSR, 1985, vol. 55, p. 1976 - 1982
作者:Livantsov, M. V.、Prishchenko, A. A.、Lutsenko, I. F.
DOI:——
日期:——
Nucleoside <i>H</i>-Phosphonates. 18. Synthesis of Unprotected Nucleoside 5‘-<i>H</i>-Phosphonates and Nucleoside 5‘-<i>H</i>-Phosphonothioates and Their Conversion into the 5‘-Phosphorothioate and 5‘-Phosphorodithioate Monoesters
A simple and efficient protocol for the preparation of unprotected nucleoside 5'-H-phosphonates and nucleoside 5'-H-phosphonothioates via a one-step deprotection of suitable precursors with methylamine has been developed. The synthetic utility of the unprotected nucleotide derivatives was demonstrated by converting them under mild conditions to the corresponding nucleoside 5'-phosphorothioate and nucleoside 5'-phosphorodithioate monoesters. Factors affecting oxidation of H-phosphonate, H-phosphonothioate, and phosphite derivatives with elemental sulfur are also discussed.
Synthesis and reactivity of alkoxy(trimethylsiloxy)phosphines and their derivatives
作者:Andrey A. Prishchenko、Mikhail V. Livantsov、Olga P. Novikova、Ludmila I. Livantsova、Valery S. Petrosyan
DOI:10.1002/hc.20762
日期:——
Convenient procedures for the synthesis of newalkoxy(trimethylsiloxy)phosphines and their derivatives starting from the available alkyl hypophosphites and N-trimethylsilyl succinimide are proposed. Some properties of these new phosphines such as nucleophilic substitution of the trimethylsiloxy group at trivalentphosphorus, the Arbuzov reaction, and addition of PH and POSi fragments to multiple carbon–carbon