Zobrazeno 1 - 10
of 235
pro vyhledávání: '"J. B. Stothers"'
Publikováno v:
Canadian Journal of Chemistry. 72:56-68
The known isomerization of the tricyclo[5.3.1.01,5]- to the [6.3.0.01,5]undecane skeleton by β-homoenolization led to examination of 2,9,9-trimethyl-6-methoxymethyltricyclo[5.3.1.01,5]undecanone (6) as a potential precursor for the synthesis of pent
Autor:
David Muir, J. B. Stothers
Publikováno v:
Canadian Journal of Chemistry. 71:1290-1296
Under homoenolization conditions (t-BuO−/t-BuOH/185 °C), the 3,3-dimethylbenzobicyclo[2.2.2]- and [3.2.1]octen-2-ones (7, 8) and their [3.2.2] homolog (9) each undergo β-enolate rearrangement to a single ketone. These rearrangement processes, how
Autor:
David Muir, J. B. Stothers
Publikováno v:
Canadian Journal of Chemistry. 71:1099-1105
While 3,3-dimethylbicyclo[3.3.1]nonan-2-one (5) is stable under strongly basic conditions (t-BuO−/t-BuOH/185 °C), its isomer, 3,3-dimethylbicyclo[3.2.2]nonan-2-one (6), is slowly transformed to 5. Similarly, 3,3-dimethylbicyclo-[3.2.2]non-6-en-2-o
Publikováno v:
ChemInform. 22
Publikováno v:
ChemInform. 24
Publikováno v:
ChemInform. 25
Autor:
J. B. Stothers, D. J. Muir
Publikováno v:
ChemInform. 25
Autor:
D. J. Muir, J. B. Stothers
Publikováno v:
ChemInform. 25
Publikováno v:
Canadian Journal of Chemistry. 70:1274-1280
Ring expansion through β-proton abstraction from α-methyl groups has been observed for the α-phenyl-α,α′,α′,-tri-methyl derivatives of cyclopentanone and cyclohexanone upon treatment with t-BuO−/t-BuOH/185 °C. This contrasts with the lac
Autor:
Shirley E. Thomas, Mollin B. Rampersad, J. B. Stothers, Vijay Patel, Rainer A. Dyllick-Brenzinger
Publikováno v:
Canadian Journal of Chemistry. 68:1106-1115
Di-tert-butyl ketone (2a), 5,5,7,7-tetramethyl-6-undecanone (2b), and 2,4-dimethyl-2,4-diphenyl-3-pentanone (2d) have been found to undergo slow rearrangement by β-proton abstraction from the α-methyl groups upon treatment with t-BuO−/t-BuOH/≥