On the electrochemical fluorination of derivatives of morpholine and piperidine
摘要:
Electrochemical fluorination (ECF) of alpha,omega-dimorpholino- and dipiperidino-alkanes of different chain length (n = 1-6) and of morpholinocyclohexene gave the perfluoro derivatives in yields up to 45%. By ring contractions, fragmentations and rearrangements several side products were obtained. Conclusions on the mechanism of ECF, based on a sterical model, were drawn.
Ruthenium Catalyzed <i>N</i>
-Alkylation of Cyclic Amines with Primary Alcohols
作者:Risto Savela、Dieter Vogt、Reko Leino
DOI:10.1002/ejoc.202000167
日期:2020.5.29
A robust alcohol amination protocol using common saturated cyclic amines and primary alcohols as starting material is described for synthesis of 29 compounds. The reactions are catalyzed by combination of dichloro(p ‐cymene)ruthenium(II) dimer precatalyst with triphenylphosphine ligand. The catalyst can be precipitated by addition of hexane or cold diethyl ether, followed by isolation of the product
Bleaching compositions are provided that comprise two nitrile groups where each nitrile is bonded to a quaternary nitrogen through a methylene unit. The quaternary nitrogens are part of a saturated ring. This saturated ring contains from two to eight atoms in addition to the quaternary nitrogen. A source of active oxygen will react with the nitriles for bleaching applications.
Bleaching compositions are provided that comprise a nitrile containing compound that has the nitrile bonded to a quaternary nitrogen through a methylene unit (where one or both of the normal hydrogens can be substituted), and two of the quaternary nitrogen bonds are part of a saturated ring. This saturated ring contains from two to eight atoms in addition to the quaternary nitrogen. A source of active oxygen will react with the nitrile for bleaching applications. Particularly preferred nitrile containing compounds are N-alkyl morpholinium acetonitrile salts.
POLYMERIZABLE COMPOUNDS AND THE USE THEREOF IN LIQUID-CRYSTAL DISPLAYS
申请人:MERCK PATENT GMBH
公开号:US20170121606A1
公开(公告)日:2017-05-04
The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerizable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment type, or a stabilizers in LC media and LC displays.
POLYMERISABLE COMPOUNDS AND THE USE THEREOF IN LIQUID-CRYSTAL DISPLAYS
申请人:MERCK PATENT GMBH
公开号:US20220127532A1
公开(公告)日:2022-04-28
The present invention relates to polymerisable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerisable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment (PS, PSA) and self-aligning (SA) type.