29866-54-4Relevant articles and documents
Monodentate Transient Directing Group Enabled Pd-Catalyzed Ortho-C-H Methoxylation and Chlorination of Benzaldehydes
Li, Feng,Zhou, Yirong,Yang, Heng,Wang, Ziqi,Yu, Qinqin,Zhang, Fang-Lin
supporting information, p. 3692 - 3695 (2019/05/24)
We report Pd-catalyzed ortho-C-H methoxylation and chlorination of benzaldehydes by employing monodentate transient directing groups (TDGs) as an alternative strategy to bidentate TDGs. More importantly, a single crystal of benzaldehyde imine ortho-cyclopalladium intermediate was successfully obtained, and its structure was unambiguously determined by X-ray diffraction, which clearly showed that it was a binuclear palladium species bridged by a pyridone ligand. The utility of this approach was further demonstrated through the synthesis of key intermediates of natural products and drugs.
A Mild meta-Selective C–H Alkylation of Catechol Mono-Ethers
Vitaku, Edon,Njardarson, Jon T.
supporting information, p. 3679 - 3683 (2016/08/16)
Catechol mono-ethers are an important class of phenols. They are found in a number of pharmaceuticals, flavoring agents, perfumes, and are used for the preparation of numerous drugs. Herein, we report a mild meta-selective C–H alkylation of these phenols, which is enabled by a cascade of oxidative dearomatization – radical addition – rearomatization process. The method is compatible with reactive functional groups on the parent arenol, such as olefins and halides. Primary, secondary, and teriary alkyl groups can be used, the source of which is most commonly an alkylborane. This process is operationally simple, does not require heating and generally proceeds in good yields.
INHIBITORS OF HUMAN IMMUNODEFICIENCY VIRUS REPLICATION
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Page/Page column 72-73, (2009/06/27)
Compounds of formula (I): wherein R4, R6 and R7 are defined herein, are useful as inhibitors of HIV replication.