Indium(III)-Catalyzed Reductive Bromination and Iodination of Carboxylic Acids to Alkyl Bromides and Iodides: Scope, Mechanism, and One-Pot Transformation to Alkyl Halides and Amine Derivatives
chlorides, and esters. Furthermore, this reducing system can be applied to the one-pot synthesis of alkyl halides and amine derivatives via the addition of nucleophiles. Insight into the reactionmechanism was gained via the time course of 1H and 13C NMR monitoring experiments and the corresponding stepwise reactions.
描述了高效的铟(III)催化的各种羧酸与1,1,3,3-四甲基二硅氧烷(TMDS)和溴或碘源的还原溴化或碘化。该官能团互变对几种官能团具有高耐受性,例如卤素,羟基,硝基,烯烃部分和硫化物部分。该铟催化体系也适用于醛化,酰氯和酯的还原碘化。此外,该还原体系可通过添加亲核试剂用于一锅法合成卤代烷和胺衍生物。通过1 H和13 C NMR监测实验的时间过程以及相应的逐步反应,可以深入了解反应机理。
One-Pot Preparation of Alkyl Iodides from Esters by Indium-Catalyzed Reductive Cleavage of a Carbon-Oxygen Bond
We describe the indium-catalyzed reductive iodination of aliphatic and aromatic esters with iodine and 1,1,3,3-tetramethyldisiloxane (TMDS). This reducing procedure accommodates a variety of esters, including esters containing alkyl groups, halogens, a hydroxy group, a thioether, and an alkene moiety. Also, this procedure was applied to the cleavage of carbon–oxygen bonds in acrylate polymers.
NORBORNENE-TYPE POLYMERS HAVING QUATERNARY AMMONIUM FUNCTIONALITY
申请人:Bell Andrew
公开号:US20110143260A1
公开(公告)日:2011-06-16
Embodiments of the present disclosure encompass vinyl addition and ROMP polymers having at least one type of repeating unit that encompasses a comprise N
+
(CH
3
)
3
OH
−
moiety. Other embodiments in accordance with the disclosure include alkali anion-exchange membranes (AAEMs) made from one of such polymers, anion fuel cells (AFCs) that encompass such AAEMs and components of such AFCs, other than the AAEM, that encompass one of such polymers.
Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic device
申请人:IDEMITSU KOSAN CO., LTD.
公开号:US10297757B2
公开(公告)日:2019-05-21
An organic electroluminescence device having higher performance, in particular exhibiting a better driving voltage and a better external quantum efficiency, while having an extended lifetime; and an electronic equipment provided with the organic electroluminescence device are provided. In addition, a compound for realizing the same device and equipment is provided. Specifically, a compound having a specific structure having a triphenylene skeleton; an organic electroluminescence device using the compound; and an electronic equipment provided with the organic electroluminescence device were provided.
[EN] AEROBIC OXIDATION SYSTEM CONTAINING SULFINIC ACID, SULFONIC ACID OR DERIVATIVES THEREOF AND PHOTOCATALYTIC OXIDATION METHOD THEREFOR<br/>[FR] SYSTÈME D'OXYDATION AÉROBIE CONTENANT DE L'ACIDE SULFINIQUE, DE L'ACIDE SULFONIQUE OU DES DÉRIVÉS ASSOCIÉS ET PROCÉDÉ D'OXYDATION PHOTOCATALYTIQUE CORRESPONDANT<br/>[ZH] 一种含亚磺酸、磺酸或其衍生物的需氧氧化体系及其光促氧化方法