Theoretical kinetic and thermodynamic studies of the strain energies and ring size effects of the 1,3-dipolar cycloaddition reactions on ethinamate medicine analogs
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Molecular Structure"
DOI: 10.1016/j.molstruc.2019.127544
Abstract: Abstract In this study, strain effects of a side ring on the 1,3-dipolar cycloaddition reactions were investigated. It was important to find a reactant with a ring closed at the structure of the selected dipolarophile.… read more here.
Keywords: medicine; cycloaddition reactions; kinetic thermodynamic; ethinamate medicine ... See more keywords
Stability of Carbocyclic Phosphinyl Radicals: Effect of Ring Size, Delocalization, and Sterics
Sign Up to like & getrecommendations! Published in 2022 at "Inorganic Chemistry"
DOI: 10.1021/acs.inorgchem.2c01968
Abstract: In this computational study, we report on the stability of cyclic phosphinyl radicals with an aim for a systematical assessment of stabilization effects. The radical stabilization energies (RSEs) were calculated using isodesmic reactions for a… read more here.
Keywords: phosphinyl radicals; delocalization; kcal mol; ring size ... See more keywords
ortho-Cycloalkyl substituted N,N'-diaryliminoacenaphthene-Ni(ii) catalysts for polyethylene elastomers; exploring ring size and temperature effects.
Sign Up to like & getrecommendations! Published in 2017 at "Dalton transactions"
DOI: 10.1039/c7dt03362a
Abstract: A family of six unsymmetrical N,N'-diiminoacenaphthene-nickel(ii) bromide complexes, [1-{2,6-(Ph2CH)2-4-MeC6H2N}-2-(ArN)C2C10H6]NiBr2 (Ar = 2-(C6H11)-6-MeC6H2Ni1, 2-(C5H9)-6-MeC6H2Ni2, 2-(C8H15)-6-MeC6H2Ni3, 2-(C6H11)-4,6-Me2C6H2Ni4, 2-(C5H9)-4,6-Me2C6H2Ni5, 2-(C8H15)-4,6-Me2C6H2Ni6), each bearing one ring-size variable 4-R-2-methyl-6-cycloalkyl-substituted N-aryl group and one N'-4-methyl-2,6-dibenzhydrylphenyl group, have been prepared and fully characterized.… read more here.
Keywords: cycloalkyl substituted; ortho cycloalkyl; substituted diaryliminoacenaphthene; cycloalkyl ... See more keywords
Stereogenic cyclic oligonaphthalenes displaying ring size-dependent handedness of circularly polarized luminescence (CPL).
Sign Up to like & getrecommendations! Published in 2019 at "Chemical communications"
DOI: 10.1039/c8cc08929a
Abstract: A series of cyclic oligomers with Dn symmetry (n = 2-5) based on chiral (R)/(S)-binaphthyl exhibiting intensive chiroptical properties were synthesized by using a Ni(0)-catalyzed coupling reaction. The intensity and the handedness of circularly polarized… read more here.
Keywords: luminescence cpl; circularly polarized; handedness circularly; polarized luminescence ... See more keywords
FeCl3-Promoted ring size-dictating diversity-oriented synthesis (DOS) of N-heterocycles using in situ-generated cyclic imines and enamines.
Sign Up to like & getrecommendations! Published in 2019 at "Chemical communications"
DOI: 10.1039/c9cc03375k
Abstract: The FeCl3-promoted ring size-controlled oxidative activation of o-alkynylanilines opens up a complementary appealing protocol for poly-N-heterocycle synthesis. When electron-poor π-alkyne iron species combine with cyclic enamines obtained from cyclohexanone and β-tetralone, they undergo a regioselective… read more here.
Keywords: size dictating; ring size; promoted ring; fecl3 promoted ... See more keywords
Ring size effects in cyclic fluorophosphites: ligands that span the bonding space between phosphites and PF3.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c9dt00893d
Abstract: The 5- to 8-membered cyclic fluorophosphites L5-8 have been prepared from the corresponding chlorophosphites which are derived from dihydroxyarenes or bis(trimethylsiloxy)arenes. Ligand L5 is very sensitive to hydrolysis but L6-8 are much more kinetically robust.… read more here.
Keywords: size effects; effects cyclic; fluorophosphites ligands; cyclic fluorophosphites ... See more keywords
Probing the effect of ortho-cycloalkyl ring size on activity and thermostability in cycloheptyl-fused N,N,N-iron ethylene polymerization catalysts.
Sign Up to like & getrecommendations! Published in 2019 at "Dalton transactions"
DOI: 10.1039/c9dt04325j
Abstract: The syntheses of six bis(imino)-5,6,7,8-tetrahydrocycloheptapyridine-iron(ii) chloride complexes, [2-{(Ar)NCMe}-9-{N(Ar)}C10H10N]FeCl2 (Ar = 2-(C5H9)-6-MeC6H3 Fe1, 2-(C6H11)-6-MeC6H3 Fe2, 2-(C8H15)-6-MeC6H3 Fe3, 2-(C5H9)-4,6-Me2C6H2 Fe4, 2-(C6H11)-4,6-Me2C6H2 Fe5, 2-(C8H15)-4,6-Me2C6H3 Fe6), are reported in which the ring size of the ortho-cycloalkyl group has been… read more here.
Keywords: ortho cycloalkyl; iron; ethylene polymerization; ring size ... See more keywords