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Jacques Perronnet Pierre Girault Jean-Pierre Demoute 《Journal of heterocyclic chemistry》1980,17(4):727-731
The reaction of diketene with N-monosubstituted hydroxyl-amines provides cyclic derivatives of the 5-hydroxy-5-methyl-isoxazolidin-3-one type. 相似文献
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The structural and electronic transport properties of La1−x
Ce
x
MnO3 (x=0.0–1.0) have been studied. All the samples exhibit orthorhombic crystal symmetry and the unit cell volume decreases with
Ce doping. They also make a metal-insulator transition (MIT) and transition temperature increases with increase in Ce concentration
up to 50% doping. The system La0.5Ce0.5MnO3 also exhibits MIT instead of charge-ordered state as observed in the hole doped systems of the same composition. 相似文献
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Jérôme JP. Leon 《Letters in Mathematical Physics》1981,5(1):75-80
We establish a transformation which connects the potentials of the one-dimensional Dirac and Klein-Gordon operators. This transformation links the solutions of the nonlinear evolution equations solvable by means of the two inverse spectral transforms which use the Dirac and Klein-Gordon direct and inverse spectral problems. 相似文献
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de Carné-Carnavalet B Archambeau A Meyer C Cossy J Folléas B Brayer JL Demoute JP 《Organic letters》2011,13(5):956-959
The substrate scope of the copper-free Sonogashira coupling has been successfully extended to cyclopropyl iodides, allowing an efficient access to a wide variety of functionalized alkynyl cyclopropanes. 相似文献