观察到 1,3-二羰基化合物具有前所未有的、以前未知的光化学反应性,氨基烯烃导致二氢吡喃。这种新的光化学反应改变了与 1,3-二羰基化合物和烯烃之间的 De Mayo 反应相关的既定范式。这种新反应可以方便地从市售反应物一步中获得 Marmycin 核心。通过初步的光物理和机械研究详细介绍了这种新光反应的起源和范围。
观察到 1,3-二羰基化合物具有前所未有的、以前未知的光化学反应性,氨基烯烃导致二氢吡喃。这种新的光化学反应改变了与 1,3-二羰基化合物和烯烃之间的 De Mayo 反应相关的既定范式。这种新反应可以方便地从市售反应物一步中获得 Marmycin 核心。通过初步的光物理和机械研究详细介绍了这种新光反应的起源和范围。
Palladium-Catalysed Carbonylative α-Arylation of Acetone and Acetophenones to 1,3-Diketones
作者:Johannes Schranck、Anis Tlili、Pamela G. Alsabeh、Helfried Neumann、Mark Stradiotto、Matthias Beller
DOI:10.1002/chem.201302590
日期:2013.9.16
Three COmponent -arylation: A carbonylative ketone -arylation process employing acetone for the first time, as well as acetophenones, is described (see scheme). The reaction tolerates a range of (hetero)aryl iodides and several functionalised aryl ketone coupling partners. Only low pressures of molecular CO are applied and no additional solvent is necessary.
Photocatalytic synthesis of tetra-substituted furans promoted by carbon dioxide
作者:Ya-Ming Tian、Huaiju Wang、Ritu、Burkhard König
DOI:10.1039/d1sc06403g
日期:——
compounds in carbon dioxide (CO2) atmosphere under mild conditions. It was found that CO2 could be incorporated at the diketone enolic OH position, which was key to enabling the cleavage of a C–O bond during the rearrangement of a cyclopropaneintermediate. This method allows for the same-pot construction of two isomers of the high-value tetra-substituted furan scaffold. The synthetic scope and preliminary
reactivity of 1,3-dicarbonylcompounds is observed with amino-alkenes leading to dihydropyrans. This novel photochemical reactivity changes the established paradigm related to the De Mayo reaction between 1,3-dicarbonylcompounds and alkenes. This newreaction allows convenient access to the Marmycin core in a single step from commercially available reactants. The origin and scope of this new photoreaction
观察到 1,3-二羰基化合物具有前所未有的、以前未知的光化学反应性,氨基烯烃导致二氢吡喃。这种新的光化学反应改变了与 1,3-二羰基化合物和烯烃之间的 De Mayo 反应相关的既定范式。这种新反应可以方便地从市售反应物一步中获得 Marmycin 核心。通过初步的光物理和机械研究详细介绍了这种新光反应的起源和范围。