The 2% cross linked poly[styrene(iodoso diacetate)] was synthesized, which was used as oxidative reagent from semicarbazones of ketones to the corresponding ketones in wet acetonitrile under mild conditions, and the p...The 2% cross linked poly[styrene(iodoso diacetate)] was synthesized, which was used as oxidative reagent from semicarbazones of ketones to the corresponding ketones in wet acetonitrile under mild conditions, and the possible mechanism was discussed.展开更多
The nanostructured mesoporous Pd/MCM-41 catalyst was prepared by impregnation.This catalyst exhibited high activity and selectivity to piphenyl during Ullmann coupling reaction of iodobenzene.With Pd loading of 12%,th...The nanostructured mesoporous Pd/MCM-41 catalyst was prepared by impregnation.This catalyst exhibited high activity and selectivity to piphenyl during Ullmann coupling reaction of iodobenzene.With Pd loading of 12%,the biphenyl yield may reach 50%,showing its good potential to match the homogeneous catalyst in traditional Ullmann coupling reactions.Based on BET and XRD etc.characterizations,the relationship between the excellent catalytic properties of the Pd/MCM-41 and its structural characteristics was discussed briefly.展开更多
The 2% cross-linked poly[styrene(iodosodiacetate)] reacted with diarylselenides and sodium azides to afford a simple and mild synthetis method of 1-azido-2- arylselenoalkanes.
文摘The 2% cross linked poly[styrene(iodoso diacetate)] was synthesized, which was used as oxidative reagent from semicarbazones of ketones to the corresponding ketones in wet acetonitrile under mild conditions, and the possible mechanism was discussed.
文摘The nanostructured mesoporous Pd/MCM-41 catalyst was prepared by impregnation.This catalyst exhibited high activity and selectivity to piphenyl during Ullmann coupling reaction of iodobenzene.With Pd loading of 12%,the biphenyl yield may reach 50%,showing its good potential to match the homogeneous catalyst in traditional Ullmann coupling reactions.Based on BET and XRD etc.characterizations,the relationship between the excellent catalytic properties of the Pd/MCM-41 and its structural characteristics was discussed briefly.
文摘The 2% cross-linked poly[styrene(iodosodiacetate)] reacted with diarylselenides and sodium azides to afford a simple and mild synthetis method of 1-azido-2- arylselenoalkanes.
