A new synthesis of substituted butenolides via cation-initiated ring expansion/elimination of β-lactones
摘要:
When treated with silver ion, gamma-bromo beta-lactones, available via bromolactonization, undergo a ring expansion/elimination reaction to afford substituted butenolides.
[EN] MACROCYCLIC AZOLOPYRIDINE DERIVATIVES AS EED AND PRC2 MODULATORS<br/>[FR] DÉRIVÉS D'AZOLOPYRIDINE MACROCYCLIQUES UTILISÉS EN TANT QUE MODULATEURS EED ET PRC2
申请人:FULCRUM THERAPEUTICS INC
公开号:WO2020190754A1
公开(公告)日:2020-09-24
The invention relates to modulators of Embryonic Ectoderm Development (EED) and/or Polycomb Repressive Complex 2 (PRC2) useful in the treatment of disorders and diseases associated with EEC and PRC2, being macrocyclic azolopyridine derivatives and compositions thereof of Formula (I), or a pharmaceutically acceptable salt, prodrug, solvate, hydrate, enantiomer, isomer, or tautomer thereof, wherein X1, X2, X3, A1, A2, Y, R1, R2, R3, and R4 are as described herein.
本发明涉及用于治疗与Embryonic Ectoderm Development (EED)和/或Polycomb Repressive Complex 2 (PRC2)相关的疾病和障碍的调节剂,是式(I)所示的宏环唑啉衍生物及其组合物,或其药用可接受的盐、前药、溶剂化物、水合物、对映体、异构体或互变异构体,其中X1、X2、X3、A1、A2、Y、R1、R2、R3和R4如本文所述。
Directed Copper-Catalyzed Intermolecular Heck-Type Reaction of Unactivated Olefins and Alkyl Halides
作者:Chunlin Tang、Ran Zhang、Bo Zhu、Junkai Fu、Yi Deng、Li Tian、Wei Guan、Xihe Bi
DOI:10.1021/jacs.8b10874
日期:2018.12.12
A new type of intermolecular alkylative olefination of unactivated olefins and alkyl halides has been realized for the first time. This copper-promoted Heck-type reaction employs a directing-group strategy to efficiently produce the coupled alkyl olefin products with excellent regio- and stereoselectivity. A broad substrate scope including 1°, 2°, and 3° alkyl bromides and various nonactivated alkenes
carboxylation reaction of allylicC−H bonds of simple alkenes with CO2 is prompted by means of a ketone and a copper complex. The unique carboxylation reaction proceeds through a sequence of an endergonic photoreaction of ketones with alkenes forming homoallyl alcohol intermediates and a thermal copper‐catalyzed allyl transfer reaction from the homoallyl alcohols to CO2 through C−C bond cleavage.
Method for producing aqueous polymer dispersions containing colorants
申请人:Mathauer Klemens
公开号:US20050075453A1
公开(公告)日:2005-04-07
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter<500 nm.
The present invention also relates to perylene dyes of the formula III as set forth in claim
35.
The present invention relates in addition to dye-comprising formulations which comprise the dye-comprising polymers of the invention and to pigmented formulations which comprise a polymer of the invention comprising optical brightener.
Copper-Catalyzed Bifunctionalization/Annulation of Unactivated Alkene with Alkyl Bromides
作者:Cancan Feng、Yangjie Wu
DOI:10.1021/acs.joc.3c01746
日期:2023.11.3
from unactivated alkenes and alkylbromides via a Cu-catalyzed inter-/intramolecular carboamidation. This reaction proceeded smoothly under mild reaction conditions and exhibited a broad substrate scope and various functional groups. This protocol is not only compatible with 1, 2, and 3° alkylbromides but also suitable for α-bromo nitrile as well as various benzyl bromides. The mechanism exploration
β-内酰胺是生物活性化合物和药物中普遍存在的支架。在此,我们公开了一种从未活化的烯烃和烷基溴出发,通过 Cu 催化的分子间/分子内碳酰胺化反应构建 β-内酰胺的简化方法。该反应在温和的反应条件下顺利进行,并表现出广泛的底物范围和丰富的官能团。该方案不仅与 1、2 和 3° 烷基溴兼容,而且还适用于 α-溴腈以及各种苄基溴。机理探索表明涉及顺序自由基加成/还原消除。