Results 11 to 20 of about 26,979 (280)
A New Synthesis of p-Hydroxy Phenylglycine and Some Analogues from p-Benzoquinone
, 2016 A new route to p-hydroxy phenylglycine and N-substituted analogues has been developed starting from p-benzoquinone. 1,2-Addition of methyl lithioacetate to p-benzoquinone and subsequent quenching of the oxygen anion with methyl chloroformate, followed by
Gerardus T. M. Titulaer (3076158) +3 more
core +16 more sources
The ground state fundamentals of p-benzoquinone and p-benzoquinone-d4 [PDF]
Journal of Molecular Spectroscopy, 1974 Abstract The solid state infrared and Raman spectra of p -benzoquinone and several isotopic derivatives are reported and compared with the results of previous solution and vapor phase studies and with the results of previously published normal coordinate analyses.
Dunn, Thomas M., Francis, Anthony H.
openaire +3 more sources
Spin-Carrying Benzoquinone Derivatives
, 2016 Several 1,4-benzoquinone derivatives carrying oxy-TEMPO radical(s) at the 2-position or 2,5-positions were found to give black crystals by recrystallization from pale yellow solutions and it was revealed from their crystal structures that unusual single ...
Hideto Suzuki (2330695) +4 more
core +9 more sources
Antimicrobial Abietane-Type Diterpenoids from Plectranthus punctatus
Molecules, 2017 Four new para-benzoquinone containing abietane-type diterpenoids (1–4) along with thirteen known diterpenoids (5–17) were isolated from the roots of Plectranthus punctatus.
Negera Abdissa +2 more
doaj +1 more source
A visible-light-induced, metal-free bis-arylation of 2,5-dichlorobenzoquinone
Beilstein Journal of Organic Chemistry, 2021 A metal-free protocol for the direct bis-arylation of 2,5-dichlorobenzoquinone with aryldiazonium salts is reported. The reactive salts are generated in situ and converted to radicals through irradiation with visible light.
Pieterjan Winant, Wim Dehaen
doaj +1 more source
Aqueous Ti(IV)-Catalyzed Diels-Alder Reaction
Molecules, 2007 The aqueous Diels-Alder reaction of 1,3-cyclohexadiene with 1,4-benzoquinone was compared and contrasted to the same reaction catalyzed with Flextyl P™, a novel Ti(IV) performance catalyst.
Kyle E. Litz
doaj +1 more source
Design, synthesis and α-glucosidase inhibition study of novel embelin derivatives
Journal of Enzyme Inhibition and Medicinal Chemistry, 2020 Embelin is a naturally occurring para-benzoquinone isolated from Embelia ribes (Burm. f.) of the Myrsinaceae family. It was first discovered to have potent inhibitory activity (IC50 = 4.2 μM) against α-glucosidase in this study.
Xiaole Chen +11 more
doaj +1 more source
4'-Bromophenyl Triptycene-2,5-diol
Molbank, 2013 Diels Alder reaction of 4-bromophenylquinone (Br-PQ) with anthracene, followed by reduction affords the desired 4'-bromophenyl triptycene-2,5-diol (T-Br-PH).
Mahadevappa Y. Karidurganavar +2 more
doaj +1 more source
ChemElectroChem, 2023 Selective oxidation is still a challenge for targeted conversion of biomass derived substance to high‐value added products. Herein we report an efficient electrochemical strategy to transform phenol into p‐benzoquinone, by tandem oxidations of CuSO4 and ...
Weizhuo Xu +4 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2018 [Bis(trifluoroacetoxy)iodo]benzene (BTI) and (diacetoxyiodo)benzene (DIB) efficiently promote the formation of acylnitroso species from hydroxamic acids in the presence of various dienes to give the corresponding hetero-Diels–Alder (HDA) adducts in ...
Hisato Shimizu +5 more
doaj +1 more source