The reaction of perfluoro-2,5-diazahexane 2,5-dioxyl with alkenes
摘要:
The liquid-phase reaction at room temperature of the title dioxyl (1) with an excess of the alkenes CH2=CHR (R=H, F, COCl), CF2=CHF, CHCl=CCl2 and cis-CHCl=CHCl gives 1:1 copolymers 3 in high yield, although with the alkenes CH2=CH2, CH2=CHF and CF2=CHF cyclic 1:1 adducts 2 are also formed in low yield. The reactions with the alkenes CH2=CMe(2), CH2=CHEt, CH2=CHCO2H and cis-HO2CCH=CHCO2H produce copolymers which are not 1:1 copolymers. The 1:1 copolymer 3f from acryloyl chloride is hydrolysed readily by water to the acrylic acid/dioxyl 1 1:1 copolymer 3j. Gas-phase reaction at room temperature of 1 with an excess of the alkenes CH2=CHR (R=Cl, Br, COCl, COF), CH2=CXCH(3) (X=Cl, Br), CHCl=CCl2, cis- and trans-CHCl=CHCl, CH2=CCl2, CF2=CCl2, CF2=CFCl and CF2=CFBr affords cyclic 1:1 adducts 2 (11.5-78%) and copolymers 3 (18.5-76.5%): hydrolysis of the acryloyl fluoride 1:1 adduct 2j gives the acrylic acid 1:1 adduct 2s in high yield.
Anharmonic vibrational analysis of s-trans and s-cis conformers of acryloyl fluoride using numerical-analytic Van Vleck operator perturbation theory
作者:Sergey V. Krasnoshchekov、Norman C. Craig、Lidiya A. Koroleva、Nikolay F. Stepanov
DOI:10.1016/j.saa.2017.07.062
日期:2018.1
basis set. The numerical-analytic implementation of the second-order operator canonical Van Vleck perturbation theory was employed for predicting anharmonic IR and Raman scattering (RS) spectra of ACRF. To improve the anharmonic predictions, harmonic frequencies were replaced by their counterparts evaluated with the higher-level CCSD(T)/cc-pVTZ model, to form a "hybrid" PES. The original operator representation
Synthesis of 7,7-dimethylbicyclo-[3.3.0]octane by acetylating a dicobaltohexacarbonyl 4-methylpent-3-en-1-yne complex
作者:A. L. Veretenov、A. S. Gybin、V. A. Smit、V. A. Chertkov、A. S. Shashkov
DOI:10.1007/bf00956963
日期:1989.8
Short path to the synthesis of bi- and tricyclic compounds containing the 3-oxabicyclo[3.3.0]octene fragment from conjugated enynes by successive AdE reaction and [2+2+1]-cycloaddition
作者:W. A. Smit、S. O. Simonyan、G. S. Mikaelyan、S. S. Mamyan、A. S. Gybin、A. S. Shashkov、R. Caple