87352-10-1Relevant articles and documents
Thiones as superdipolarophiles. Rates and equilibria of nitrone cycloadditions to thioketones
Huisgen, Rolf,Fisera, Lubor,Giera, Henry,Sustmann, Reiner
, p. 9671 - 9678 (2007/10/02)
1,3-Dipolar cycloadditions of N-methyl-C,C-diphenylnitrone (15) and N-methyl-C-phenylnitrone (16) with aliphatic thioketones are equilibrium reactions. The 1,4,2-oxathiazolidines were characterized and their dissociation constants measured by 1
Silyl Group Transfer in the Cycloaddiition Reactions of Silyl Iminium Salts Derived from Aryl-Substituted Oximes
Padwa, Albert,Dent, William H.,Schoffstall, Allen M.,Yeske, Philip E.
, p. 4430 - 4437 (2007/10/02)
Reaction of the iminium salt derived from benzaldehyde oxime and (trimethylsilyl)methyl triflate with cesium fluoride gives rise to azomethine ylides.Dipolar cycloaddition proceeded with complete stereospecificity with dimethyl fumarate and maleate.In sha
Benzaldehyde Oxime as a 1,3-Dipole Chameleon
Padwa, Albert,Dent, William,Yeske, Philip E.
, p. 3944 - 3946 (2007/10/02)
Reaction of the iminium salt derived from benzaldehyde oxime and (trimethylsilyl)methyl triflate with cesium fluoride in the presence of electron-dificient alkenes gives rise to azomethine ylide cycloadducts.In sharp contrast, reaction of the salt with alkynes produces dipolar cycloadducts derived from nitrones.
New Synthesis of β-Lactams Based on Nitrone Cycloaddition to Nitroalkenes
Padwa, Albert,Koehler, Konrad F.,Rodriguez, Augusto
, p. 282 - 288 (2007/10/02)
Heating a sample of the major 5-nitro-substituted isoxazolidine isomer obtained from the reaction of a C-phenyl-N-alkylnitrone with trans-1-cyano-2-nitroethylene in methanol resulted in ring contraction and formation of 4-phenyl-3-cyano-N-alkyl-2-azetidin
