Strong influence of intramolecular Si⋯O proximity on reactivity: Systematic molecular structure, solvolysis, and mechanistic study of cyclic N -trimethylsilyl carboxamide derivatives
basis of DFT calculations, a good correlation between reactivity and the Si⋯O distance was found within each family of compounds. The viability of two different reaction pathways was evaluated using a detailed computational mechanistic study of the methanolysis of cyclic urea homologues. Peculiarities in the single-crystal X-ray diffraction structures of the trimethylsilyl and trimethylsiloxy phthalimides
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
A new synthesis of thiophosphoric acid esters with a C-S-P bond
作者:Christa E. Müller、Hermann J. Roth
DOI:10.1016/0040-4039(90)87018-u
日期:1990.1
S-substituted thiosuccinimides 1a-d and thiophthalimides 2a-d were found to react with trialkylphosphites according to a Michaelis-Arbuzov type mechanism. This provides an efficient way to prepare thiophosphoricacid esters, particularly thiophospholipids, with a C-S-P bond.
Process for preparing 3'bromo-desacetoxycephalosporanic acid sulfoxide
申请人:Gist-Brocades N.V.
公开号:US04366315A1
公开(公告)日:1982-12-28
An improved process for the preparation of 3'-bromo-desacetoxycephalosphoranic acid sulfoxide compounds comprising protecting the 4-carboxy group of a 3'-unsubstituted cephalosporanic acid sulfoxide by silylating in an inert anhydrous organic solvent and brominating the silylated compound in situ which 3'-bromo compounds are valuable intermediates for the preparation of therapeutically useful cephalosporanic acid compounds.
N-Alkylation of N-trimethylsilyl derivatives of lactams, amides, and imides with alkyl sulfonates
作者:A. D. Shagina、E. P. Kramarova、A. G. Shipov、D. V. Tarasenko、Vad. V. Negrebetsky、Yu. I. Baukov
DOI:10.1007/s11172-020-2775-x
日期:2020.2
The reaction of N -trimethylsilyl derivatives of amides and imides with alkyl sulfonates on heating affords the corresponding N -alkyl derivatives and trimethylsilyl sulfonates.