Zobrazeno 1 - 10
of 148
pro vyhledávání: '"J. F. W. McOmie"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 88:883-888
The trimethyl ethers of fomecin B (3,4,5-trihydroxyphthalaldehyde) and flavipin (3,4,5-trihydroxy-6-methylphthalaldehyde) have been prepared by the thermal decomposition of the selenite esters of the corresponding phthalyl alcohols. Complete demethyl
Autor:
J. M. Blatchly, J. F. W. McOmie
Publikováno v:
Organic Reactions
In 1898, Johannes Thiele described the reaction of p-benzoquinone with acetic acid in the presence of a small quantity of sulfuric acid to give 1,2,4-triacetoxybenzene in 80% yield. Later Thiele and Winter described further experiments that showed bo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be0ea35b2981be36b76b4551f0f6ccf0
https://doi.org/10.1002/0471264180.or019.03
https://doi.org/10.1002/0471264180.or019.03
Autor:
D. E. West, J. F. W. McOmie
Publikováno v:
Organic Syntheses
3,3′-Dihydroxybiphenyl solvent: 120 ml. of methylene chloride product: 3,3′-dihydroxybiphenyl Keywords: cleavage, dealkylation; boron tribromide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a16668cafda25139bf7bf962a7c77ef9
https://doi.org/10.1002/0471264180.os049.14
https://doi.org/10.1002/0471264180.os049.14
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :314-318
The synthesis and the Thiele–Winter acetoxylation of several 1,4-benzoquinones has been studied. 2-Bromo-6-phenyl- and 2-bromo-5-phenyl-1,4-benzoquinone gave triacetates with the inserted acetoxy-group ortho to the bromine atom. 2-Bromo-3-phenyl-1,
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :115-120
The title compounds have been synthesized but neither the second of them nor 1,1′-bisbiphenylenyl could be dehydrocyclised to give biphenyleno-annelated derivatives of cycle-octatetraene. 2-Styrylbiphenylene undergoes photodimerisation and not cycl
Publikováno v:
Tetrahedron. 32:2571-2578
Ring current intensities and proton chemical shifts have been calculated for a series of condensed aromatic hydrocarbons including biphenylenes. The calculations show that an induced paramagnetic ring current occurs in the 4-membered ring of each of
Autor:
J. F. W. McOmie, W.Roderick Mound, Michael C. Goodland, Sadiq A. Saleh, Ken J. Gould, John W. Barton
Publikováno v:
Tetrahedron. 35:241-247
As possible routes to 1,4-diazabiphenylene and its 2,3-disubstituted derivatives we have studied the condensation of benzocyclobutene-1,2-dione (BBD) with various 1,2-diamines. Instead of giving the 1,4-diazabiphenylene ring system, BBD reacted with
Autor:
Sadiq A. Saleh, J. F. W. McOmie
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :384-388
It has been confirmed that Thiele–Winter acetoxylation of 5-methyl-3-t-butyl-1,2-benzoquinone gives 1,2,4-triacetoxy-5-methyl-3-t-butylbenzene. The by-product from 2-methyl-6-t-butyl-1,4-benzoquinone has been shown to be 2-(2-ethoxy-2-methylpropyl)
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :309-314
The Thiele–Winter acetoxylation of the following 1,4-benzoquinones has been studied: 2-methoxy-3-phenyl-, 2-methoxy-6-phenyl-, 2-hydroxy-5-phenyl-, 2-hydroxy-6-phenyl-, and 2-(4-substituted phenyl)-(with NO2, Br, OMe, OH, and OAc as substituents).
Autor:
Nigel P. Hacker, J. F. W. McOmie
Publikováno v:
Tetrahedron. 40:5249-5254
UV irradiation of phenanthrene and 1,1-dichloro-, 1,2-dichloro-, and 1,1,2-trichloroethenes resulted m [2+2]cycloaddition to give cyclobutane derivatives. Treatment of the 1,2-dichloro-adducts with N-bromosuccinimide resulted in aromatisation to yiel