organic materials showing roomtemperature phosphorescence (RTP) and ultralong RTP (OURTP) have recently attracted much attention. However, it is challenging to integrate circularly polarized luminescence (CPL) into RTP/OURTP. Here, we show a strategy to realize CPL-active OURTP (CP-OURTP) by binding an achiral phosphorgroup directly to the chiral center of an ester chain. Engineering of this flexible chiral
Disclosed is a dispersant composition, suitable for use in lubricating oils. The dispersant composition is a reaction product of (i) a polyalkenyl succinimide post-treated with a post-treating agent selected from the group consisting of an organic carbonate, an epoxide, a lactone, a hydroxyaliphatic carboxylic acid, and combinations thereof; and (ii) an acylating agent.
本发明公开了一种适用于润滑油的分散剂组合物。该分散剂组合物是以下物质的反应产物:(i) 经后处理剂处理的聚烯基琥珀酰亚胺,后处理剂选自有机碳酸盐、环氧化物、内酯、羟基脂肪族羧酸及其组合;以及 (ii) 丙烯酸化剂。
DISPERSANTS, METHOD OF MAKING, AND USING SAME
申请人:Chevron Oronite Company LLC
公开号:EP3625316A1
公开(公告)日:2020-03-25
[EN] DISPERSANTS, METHOD OF MAKING, AND USING SAME<br/>[FR] DISPERSANTS, PROCÉDÉ DE PRODUCTION ET LEUR UTILISATION
申请人:CHEVRON ORONITE CO
公开号:WO2018211466A1
公开(公告)日:2018-11-22
Disclosed is a dispersant composition, suitable for use in lubricating oils. The dispersant composition is a reaction product of (i) a polyalkenyl succinimide post-treated with a post-treating agent selected from the group consisting of an organic carbonate, an epoxide, a lactone, a hydroxyaliphatic carboxylic acid, and combinations thereof; and (ii) an acylating agent.
Optimization of pharmacokinetic properties by modification of a carbazole-based cannabinoid receptor subtype 2 (CB2) ligand
作者:Dominik Heimann、Frederik Börgel、Henk de Vries、Kim Bachmann、Victoria E. Rose、Bastian Frehland、Dirk Schepmann、Laura H. Heitman、Bernhard Wünsch
DOI:10.1016/j.ejmech.2017.10.049
日期:2018.1
13b) were synthesized and pharmacologicallyevaluated. The key step in the synthesis of substituted carbazoles 23a, 24a and 26a was a Fischer indole synthesis. Nucleophilic substitution of tosylated lactate 5 by carbazole anion provided the fluoroisopropyl derivatives 13a and 13b. Partial hydrogenation of the aromatic carbazole system (26a) was not tolerated by the CB2 receptor. A methylsulfonyl moiety