[EN] MODULATORS OF CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR, PHARMACEUTICAL COMPOSITIONS, METHODS OF TREATMENT, AND PROCESS FOR MAKING THE MODULATOR [FR] MODULATEURS DU RÉGULATEUR DE LA CONDUCTANCE TRANSMEMBRANAIRE DE LA FIBROSE KYSTIQUE, COMPOSITIONS PHARMACEUTIQUES, PROCÉDÉS DE TRAITEMENT ET PROCÉDÉ DE FABRICATION DU MODULATEUR
New methods and reagents in organic synthesis. 41. Lithium trimethylsilyldiazomethane. A new synthon for the preparation of pyrazoles from α,β-unsaturated nitriles
作者:Tayahiko Aoyama、Sumie Inoue、Tokoyuki Shioiri
DOI:10.1016/s0040-4039(00)99904-0
日期:1984.1
Lithium trimethylsilyldiazomethane reacts smoothly with various α,β-unsaturated nitriles to give 3(or 5)-trimethylsilylpyrazoles in good yields.
[EN] MODULATORS OF CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR<br/>[FR] MODULATEURS DU RÉGULATEUR DE LA CONDUCTANCE TRANSMEMBRANAIRE DE LA FIBROSE KYSTIQUE
申请人:ABELA ALEXANDER RUSSELL
公开号:WO2019195739A1
公开(公告)日:2019-10-10
This disclosure provides modulators of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR), pharmaceutical compositions containing at least one such modulator, methods of treatment of cystic fibrosis using such modulators and pharmaceutical compositions, and processes for making such modulators.
palladium-catalyzed coupling of aryl triflates with pyrazolederivatives is described. Using tBuBrettPhos as a ligand, the palladium-catalyzed C–N coupling of a variety of aryl triflates including ortho-substituted ones with pyrazolederivatives proceeded efficiently to give N-arylpyrazole products in high yields. 3-Trimethylsilylpyrazole was found to be an excellent pyrazole substrate for the coupling, and the corresponding
One-pot oxo-amination of unactivated cyclopropanes with safe, green dioxygen as an oxidant and low-cost amines as nitrogen sources has generated interest since this can directly result in uniform β-located difunctional units. Formation of the three-electron cation radical followed by the nucleophilic attack of amines to open the strained ring of cyclopropanes catalyzed by classic noble-complex photocatalysts
使用安全、绿色的双氧作为氧化剂和低成本的胺作为氮源,对未活化的环丙烷进行一锅法氧代胺化引起了人们的兴趣,因为这可以直接产生均匀的 β 位双功能单元。形成三电子阳离子自由基,然后胺的亲核攻击打开由经典贵金属络合物光催化剂催化的环丙烷的应变环是一种有前途的策略。然而,这种开环途径无法维持整个二级亲核取代(S N2) 转化率,这通常导致对映体选择性不令人满意(对映体过量(ee)值~60%)。在这里,我们证明了对于环丙烷与良性分子氧和吡唑的这种一步氧代胺化,可以首先通过 TiO 2光催化剂实现高度均匀的构型反转。该策略具有低成本、半多相光催化和环境友好的反应条件,无需使用任何牺牲试剂或添加剂。重要的是,我们的方案不仅提供了相对广泛的底物范围,可耐受一定范围的取代环丙烷和吡唑,从而产生具有出色转化率和收率的各种 β-氨基酮产品(~50 个示例),而且还保留了出色的对映选择性(ee 值~99%)。一致