Photoelectron Spectroscopy of Heterocycles. Phenyloxiranes

Güsten, H.; Klasinc̆, L.; Novak, Igor; Sanjek, M.

doi:10.1515/zna-1984-1215

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…A proposta de fragmentação para os produtos de metátese, baseados nos respectivos espectros de massa, está apresentada no Material Suplementar. 32,33 CONCLUSÃO G1 e G2 foram avaliados como catalisadores na metátese de olefinas do AC e ACM, por 24 h a 50 ºC, tendo como a principal variável de sistema a proporção Ru:substrato; de 1:10 e 1:1 mol. Os resultados indicaram que o impedimento estérico dos ligantes ancilares PCy 3 e NHC conduziram à formação de dois diferentes produtos, 1,5-difenil-2-penteno para G1 e estilbeno para G2.…”

Section: Reações Catalisadas Por G1 E G2unclassified

Influência Do Impedimento Estérico De Ligantes Ancilares Em Complexos a Base De Ru Aplicados Em Metáteses Do Álcool E Acetato Cinamílicos

Vieira¹,

Silva²,

Carvalho³

et al. 2020

Quím. Nova

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= CHPh), second-generation Grubbs catalyst-G2. The reactions occurred in the same reaction conditions for both substrates, 50 °C, for 24 h, in the proportions Ru:substrate of 1:1 and 1:10 mol. At the end of each experiment, the reaction mixture was evaluated by GC-MS and NMR of 13 C{ 1 H}. The results revealed different products when G1 and G2 are applied in the metathesis of AC, 1,5-diphenyl-2-pentene and stilbene, respectively. When ACM is the substrate, no product is noted with G1 and stilbene was the compound obtained with G2 as catalyst. In this study, we have presented a discussion about the electronic and steric influence of the ancillary ligands in the yield and type of product formed in the catalytic process.

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Section: Reações Catalisadas Por G1 E G2unclassified

Influência Do Impedimento Estérico De Ligantes Ancilares Em Complexos a Base De Ru Aplicados Em Metáteses Do Álcool E Acetato Cinamílicos

Vieira¹,

Silva²,

Carvalho³

et al. 2020

Quím. Nova

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“…7 ) may be compaxed with those of 1,l -diphenylethene and triphenylethene, respectively, for which assignments are relatively secure [ 4,23,24] [ Fig. 8 (b)] .…”

Section: Assignment Of Z(n) Of Monocarhonylsmentioning

confidence: 99%

Photoelectron spectroscopy of biologically active molecules. 20.Para-quinones, semiquinones, and aromatic ketones

Tolić

Kovač

Klasinc̆

et al. 1990

Int. J. Quantum Chem.

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We have recorded and analyzed the He1 PE spectra of the following molecules: 9,lO-dihydroanthracene (1); 9, IO(H)-anthracenone (2); 9,10-anthracenedione (3); 1,2,3,4-tetrahydro-9,1O-anthracenedione (4); 1,4,la,4a-tetrahydro 9,IO-anthracenedione ( 5 ) ; IO-methylene-9,10( H)-anthracenone ( 6 ) ; and 10-(phenylmethylene)-9,10( H)-anthracenone (7). The PE spectra are assigned by comparison with those of the composite parts (is., by employing an orbital interaction model such as the composite molecule method). This approach, which works surprisingly well in the present instance, indicates that the carbonyl lone pair and the carbonyl r electrons interact negligibly with the outer r electrons of the aromatic unit(s). If no change in conformation of the component aromatic parts occurs, the spectrum of the composite molecule exhibits the additivity property. This result agrees with previous studies of benzophenones [ 31. However, it is argued that the ordering of the strongly overlapped, low energy ionization bandsofbenzaldehydeandacetophenone shouldbe changed toIl(m),Z2(r) = Z3(no) andIl(r),12(no), I,( r), respectively.

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Photoelectron spectroscopy of alcohols, phenols, ethers and peroxides

Eckert‐Maksić

1993

PATAI'S Chemistry of Functional Groups

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Photoelectron Spectroscopy of Heterocycles. Phenyloxiranes

Cited by 5 publications

References 4 publications

Influência Do Impedimento Estérico De Ligantes Ancilares Em Complexos a Base De Ru Aplicados Em Metáteses Do Álcool E Acetato Cinamílicos

Influência Do Impedimento Estérico De Ligantes Ancilares Em Complexos a Base De Ru Aplicados Em Metáteses Do Álcool E Acetato Cinamílicos

Photoelectron spectroscopy of biologically active molecules. 20.Para-quinones, semiquinones, and aromatic ketones

Photoelectron spectroscopy of alcohols, phenols, ethers and peroxides

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