18244-91-2

Upstream product

• 617-86-7 triethylsilane 
• 73303-68-1 1-ethoxy-1-(triethylsiloxy)ethylene 

Downstream Products

• 73992-25-3 (S)-5-[(2S,5R,2'R,3'S,5'R)-5'-((2S,3S,5R,6R)-6-Benzyloxymethyl-6-methoxy-3,5-dimethyl-tetrahydro-pyran-2-yl)-2-ethyl-3'-methyl-octahydro-[2,2']bifuranyl-5-yl]-5-triethylsilanyloxy-hexan-2-one 

Relevant academic research and scientific papers

Comparison between electron transfer and nucleophilic reactivities of ketene silyl acetals with cationic electrophiles

The products and kinetics for the reactions of ketone silyl acetals with a series of p-methoxy-substituted trityl cations have been examined, and they are compared with those of outer-sphere electron transfer reactions from 10,10′-dimethyl-9,9′, 10, 10′- tetrahydro-9,9′-biacridine [(AcrH)2] to the same series of trityl cations as well as other electron acceptors. The C-C bond formation in the reaction of β,β-dimethyl-substituted ketene silyl acetal (1: (Me2C=C(OMe)OSiMe3) with trityl cation salt (Ph3C+ClO4-) takes place between 1 and the carbon of para-positon of phenyl group of Ph3C+, whereas a much less sterically hindered ketene silyl acetal (3: H2C=C(OEt)OSiEt3) reacts with Ph3C+ at the central carbon of Ph3C+. The kinetic comparison indicates that the nucleophilic reactivities of ketene silyl acetals are well correlated with the electron transfer reactivities provided that the steric demand at the reaction center for the C-C bond formation remains constant.

OXIDATIVE CLEAVAGE OF Si-H BOND IN PRESENCE OF SILVER PERCHLORATE. PART II. KINETICS OF COMPETITIVE-CONSECUTIVE REACTION OF TRISUBSTITUTED SILANES IN BENZENE

Kinetics of oxygenation and dehydrogenation of trisubstituted silanes (mainly selected trialkylsilanes and trialkoxysilanes) in presence of silver perchlorate was monitored manometrically.Non-linear dependence of pseudo-first-order rate constants and the initial rates of hydrogen evolution and oxygen uptake on the silver perchlorate initial concentration shows that the reaction order in respect to AgClO4 decreases from 2 to 0 and from 1 to 0, respectively.All kinetic data and activation parameters, as well as substituent effects at silicon suggest the reaction to proceed via silane - silver perchlorate intermediates of the Arrhenius or van't Hoff type which were detected spectrophotometrically previously.