[EN] PYRROLOTRIAZINONE DERIVATIVES AS PI3K INHIBITORS<br/>[FR] DÉRIVÉS DE PYRROLOTRIAZINONE EN TANT QU'INHIBITEURS DES PI3K
申请人:ALMIRALL SA
公开号:WO2014060431A1
公开(公告)日:2014-04-24
New pyrrolotriazinone derivatives having the chemical structure of formula (I) are disclosed; as well as process for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of Phosphoinositide 3-Kinases (PI3Ks).
Synthesis of Benzyl-, Allyl-, and Allenyl-boronates via Copper-Catalyzed Borylation of Alcohols
作者:Lujia Mao、Kálmán J. Szabó、Todd B. Marder
DOI:10.1021/acs.orglett.7b00256
日期:2017.3.3
Alcohols are among the most abundant and readily available organic feedstocks in industrial processes. The direct catalytic functionalization of sp3 C–O bonds of alcohols remains the main challenge in this field. Here, we report a copper-catalyzed synthesis of benzyl-, allyl-, and allenyl-boronates from benzylic, allylic, and propargylic alcohols, respectively. This protocol exhibits a broad reaction
Transition-Metal-Free Synthesis of Pinacol Alkylboronates from Tosylhydrazones
作者:Huan Li、Long Wang、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201108139
日期:2012.3.19
Highly efficient: Pinacolalkylboronates were synthesized by the reaction of tosylhydrazones with bis(pinacolato)diboron or pinacolborane under transition‐metal‐free conditions. This reaction represents an expeditious conversion of carbonyl functionality into a boronate group.
Iridium-Catalyzed Borylation of Primary Benzylic C–H Bonds without a Directing Group: Scope, Mechanism, and Origins of Selectivity
作者:Matthew A. Larsen、Conner V. Wilson、John F. Hartwig
DOI:10.1021/jacs.5b04899
日期:2015.7.8
Primary benzylic boronate esters are useful intermediates in organic synthesis, but these reagents cannot be prepared by hydroboration. The benzylic C-H borylation of methylarenes would be a method to form these products, but such reactions without neat methylarene or a directing group are unknown. We report an approach to divert the borylation of methylarenes from aromatic positions to benzylic positions
主要的苄基硼酸酯是有机合成中有用的中间体,但这些试剂不能通过硼氢化反应制备。甲基芳烃的苄基 CH 硼酸化将是形成这些产物的一种方法,但这种没有纯甲基芳烃或导向基团的反应是未知的。我们报告了一种以甲硅烷基硼烷为试剂和含有缺电子菲咯啉作为配体的新型铱催化剂将甲基芳烃的硼酸化从芳族位置转移到苄位位置的方法。该系统相对于相应的芳基硼酸酯选择性地形成苄基硼酸酯。由菲咯啉连接的 Ir 二硼基单甲硅烷基复合物被分离并确定为催化剂的静止状态。机理研究表明,这种复合物在动力学上有能力成为催化过程中的中间体。各种 Ir 配合物催化的苄基和芳基 CH 硼化的动力学研究表明,芳基 CH 硼化速率随着 Ir 催化剂金属中心电子密度的降低而降低,但苄基 CH 硼化速率对Ir 催化剂金属中心的电子密度。动力学和计算研究表明,这两种硼酸化反应对金属中心的电子密度程度的反应不同,因为它们发生在不同的转换限制步骤中。已知芳基