Photochromism of Arylchromenes: Remarkable Modification of Absorption Properties and Lifetimes of o-Quinonoid Intermediates
摘要:
A significant pi-conjugation in 6- and 7-arylchromenes manifests dramatically in the absorption properties of their photogenerated o-quinonoid intermediates. This in conjunction with facile synthesis via Suzuki coupling may render a myriad of photochromic arylchromenes with wide-ranging spectrokinetic properties readily accessible.
Oxidative carbonylation of monohydroxy aryl compounds by methyl formate
申请人:Bayer MaterialScience AG
公开号:EP2781503A1
公开(公告)日:2014-09-24
The field of the present invention relates to a process for continuously preparing alkylaryl carbonates and diarylcarbonates from methyl formate and at least one monohydroxy aryl compound in the presence of catalysts, and to the use thereof for preparation of polycarbonates.
Substituted phenyl naphthalenes as estrogenic agents
申请人:Wyeth
公开号:US20030181519A1
公开(公告)日:2003-09-25
This invention provides estrogen receptor modulators of formula I, having the structure
1
wherein
R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, and R
10
, are as defined in the specification, or a pharmaceutically acceptable salt thereof.
[EN] COMPOUNDS AND METHODS FOR TREATING OXALATE-RELATED DISEASES<br/>[FR] COMPOSÉS ET MÉTHODES DE TRAITEMENT DE MALADIES LIÉES À L'OXALATE
申请人:OXALURX INC
公开号:WO2019165159A1
公开(公告)日:2019-08-29
Disclosed herein are compounds and compositions for modulating glycolate oxidase, useful for treating oxalate-related diseases, such as hyperoxaluria, where modulating glycolate oxidase is expected to be therapeutic to a patent in need thereof. Methods of modulating glycolate oxidase activity in a human or animal subject is also provided.
An acetatopalladium(II) complex with 1‐benzyl‐
<i>N</i>
‐(3,5‐di‐
<i>tert</i>
‐butylsalicylidene)piperidin‐4‐amine: Synthesis, structure and catalytic applications in Suzuki–Miyaura coupling of arylboronic acids with hydroxyaryl halides
作者:Srinivas Keesara、G. Narendra Babu、Samudranil Pal
DOI:10.1002/aoc.3778
日期:2017.11
L− and the monodenate OAc− provide a distorted square‐planar N2O2 coordination environment around the metal centre. The physicochemical properties and the spectroscopic features of [Pd(L)(OAc)] are consistent with its molecularstructure. The complex was found to be an effective catalyst for the Suzuki–Miyaura cross‐coupling reactions of hydroxyaryl halides with arylboronic acids in predominantly aqueous
合成了具有式[Pd(L)(OAc)]的席夫碱1-苄基N-(3,5-二叔丁基水杨基)哌啶-4-胺(HL)及其乙酰钯(II)配合物。HL和[Pd(L)(OAc)]均使用元素分析和各种光谱法(红外,紫外可见,1 H NMR和13 C NMR)和质谱测量进行了表征。使用X射线晶体学分析确定复合物的分子结构。在复合物中,钳状NNO供体大号-和monodenate OAC -提供一个扭曲的正方形平面Ñ 2 ö 2金属中心周围的协调环境。[Pd(L)(OAc)]的理化性质和光谱特征与其分子结构一致。发现该络合物是主要在水性介质中的羟基芳基卤化物与芳基硼酸的Suzuki-Miyaura交叉偶联反应的有效催化剂。该反应以宽的底物范围提供了良好至优异产率的羟基联芳基产物。
Methylation of Arenols through Ni-catalyzed C-O Activation with Methyl Magnesium Bromide
作者:Wen-Juan Shi、Zhang-Jie Shi
DOI:10.1002/cjoc.201700664
日期:2018.3
Direct alkylation of arenols with alkyl organometallic reagents has never been approached. Herein we reported the first successful example of nickel‐catalyzed methylation of arenols with methyl Grignard reagents to construct C(sp2)‐C(sp3) bond under mild conditions. The transformation was compatible with broad substrate scope of 2‐naphthol derivatives. Benzyl alcohol and biphenols were also suitable