报道了 Co 和 Mn 催化的烯烃加氢肼和加氢叠氮化反应的发现、研究和实施。这些反应等效于 CC 双键与受保护的肼或偶氮酸的直接加氢胺化,但基于不同的概念,其中 H 和 N 原子来自两种不同的试剂,硅烷和氧化性氮源(偶氮二羧酸或磺酰叠氮化物) )。使用偶氮二羧酸二叔丁酯的加氢肼反应具有使用方便、官能团耐受性大、适用范围广的特点,包括单、二、三和四取代烯烃。氢叠氮化反应发展的关键是使用磺酰叠氮化物作为氮源和叔丁基过氧化氢的活化作用。发现该反应对于单、二和三取代烯烃的官能化是有效的,并且只有少数官能团是不能容忍的。获得的烷基叠氮化物是通用中间体,可以在不分离叠氮化物的情况下转化为游离胺或三唑。初步的机理研究表明,烯烃的氢化钴是限速的,然后是胺化反应。不能排除并可能涉及自由基中间体。然后进行胺化反应。不能排除并可能涉及自由基中间体。然后进行胺化反应。不能排除并可能涉及自由基中间体。
mild conditions, and the reaction of substituted benzoxazoles, oxazole and benzothiazole occurred even at room temperature. The substrate scope of the reaction was turned out to include mono-, di- and trisubstituted alkenyl bromides. To validate the scalability of this method, 5-Methyl-2-(prop-1-en-2-yl)benzoxazole (3c) was prepared on one-gram scale at room temperature.
Gram-Scale Synthesis of Chiral Cyclopropane-Containing Drugs and Drug Precursors with Engineered Myoglobin Catalysts Featuring Complementary Stereoselectivity
In combination with whole‐cell biotransformations, these stereocomplementary biocatalysts enabled the multigram synthesis of the chiral cyclopropane core of four drugs (Tranylcypromine, Tasimelteon, Ticagrelor, and a TRPV1 inhibitor) in high yield and with excellent diastereo‐ and enantioselectivity (98–99.9% de; 96–99.9% ee). These biocatalytic strategies outperform currently available methods to produce
[EN] NITROGEN-CONTAINING HETEROCYCLIC COMPOUNDS AND ORGANIC ELECTROLUMINESCENCE DEVICES CONTAINING THEM<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES AZOTÉS ET DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES CONTENANT CEUX-CI
申请人:IDEMITSU KOSAN CO
公开号:WO2017109722A1
公开(公告)日:2017-06-29
The present invention relates to compounds of the general formula (11), to a material for an organic electroluminescence device comprising ot least one of these compounds, to an organic electroluminescence device comprising at least one of these compounds, and to the use of a compound according to general formula (11) in an organic electroluminescence device as a host material or an electron transporting material.
Metal complexes containing azabenzothiazole are disclosed, which comprise a new series of ligands containing azabenzothiazole structure. The metal complexes can be used as emitters in the emissive layer of an organic electroluminescent device. The use of these novel metal complexes as emitters in OLED devices leads to more saturated color than the compounds containing benzothiazole ligands. An electroluminescent device and a formulation are also disclosed.
[EN] BENZO-IMIDAZOINDOLIZINE DERIVATIVE, ORGANIC ELECTROLUMINESCENCE ELEMENT MATERIAL USING THE SAME, AND ORGANIC ELECTROLUMINESCENCE ELEMENT AND ELECTRONIC DEVICE USING THE SAME<br/>[FR] DÉRIVÉ DE BENZO-IMIDAZOINDOLIZINE, MATÉRIAU D'ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE L'UTILISANT, ET ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE ET DISPOSITIF ÉLECTRONIQUE L'UTILISANT
申请人:IDEMITSU KOSAN CO
公开号:WO2019155363A1
公开(公告)日:2019-08-15
The present invention relates to benzo-imidazoindolizine derivatives, organic electroluminescence devices comprising said derivative, and the use of said derivative in organic electroluminescence devices.