A conjugated ketone as a catalyst in alcohol amination reactions under transition-metal and hetero-atom free conditions
作者:Xingchao Dai、Xinjiang Cui、Youquan Deng、Feng Shi
DOI:10.1039/c5ra07681a
日期:——
Here, we show the results of a molecular-defined conjugatedketone catalyzed alcohol amination reaction. Under the optimized reaction conditions, the yields to the desired products reached 98%. The reaction mechanism and kinetic study supposed that carbonyl–hydroxyl groups are the catalytically active sites, and the transfer-hydrogenation reactions progress via the recycling of carbonyl and hydroxyl
There is provided a morpholine derivative represented by General Formula [1A] or a salt thereof.
(In the formula, a ring A represents a ring represented by General Formula [I]; * represents a bonding position; Z
2
represents CH or the like; Z
1
represents CR
6
or the like; R
6
represents a hydrogen atom or the like; X
1
represents CHR
7
or the like; R
7
represents a hydrogen atom or the like; X
2
represents CH
2
or the like; R
1
and R
2
are the same as or different from each other, and each of R
1
and R
2
represents a hydrogen atom or the like; R
3
, R
4
, and R
5
are the same as or different from each other, and each of R
3
, R
4
, and R
5
represents a hydrogen atom, NR
a
R
b
, or the like; and each of R
a
and R
b
represents a hydrogen atom, a C
1-8
alkyl group which may have a substituent, or the like.)
提供一种由通用式[1A]表示的吗啉衍生物或其盐。
(在该式中,环A代表由通用式[I]表示的环;*代表连接位置;Z
2
代表CH或类似物;Z
1
代表CR
6
或类似物;R
6
代表氢原子或类似物;X
1
代表CHR
7
或类似物;R
7
代表氢原子或类似物;X
2
代表CH
2
或类似物;R
1
和R
2
相同或不同,且R
1
和R
2
中的每一个代表氢原子或类似物;R
3
,R
4
和R
5
相同或不同,且R
3
,R
4
和R
5
中的每一个代表氢原子,NR
a
R
b
或类似物;R
a
和R
b
中的每一个代表氢原子,可能具有取代基的C
1-8
烷基基团,或类似物。)
Alcohol Amination Catalyzed by Copper Powder as a Self‐Supported Catalyst
作者:Yajuan Wu、Yongji Huang、Xingchao Dai、Feng Shi
DOI:10.1002/cssc.201801877
日期:2019.7.5
Catalytic alcohol amination is a sustainable reaction for N‐alkyl amine synthesis. Homogeneous and supported copper catalysts have long been studied for this reaction and have given some impressive results. In this study, copper powder is found to behave as an active catalyst for alcohol amination, giving better catalyticperformance than metal‐oxide‐supported nanocopper catalysts. Catalyst characterization
There are described RORγ modulators of the formula (I),
or stereoisomers, tautomers, pharmaceutically acceptable salts, solvates, or prodrugs thereof, wherein all substituents are defined herein. Also provided are pharmaceutical compositions comprising the same. Such compounds and compositions are useful in methods for modulating RORγ activity in a cell and methods for treating a subject suffering from a disease or disorder in which the subject would therapeutically benefit from modulation of RORγ activity, for example, autoimmune and/or inflammatory disorders.
Cp*Rh(<scp>iii</scp>) catalyzed <i>ortho</i>-halogenation of <i>N</i>-nitrosoanilines by solvent-controlled regioselective C–H functionalization
作者:Qiujun Peng、Jian Hu、Jiyou Huo、Hongshun Yuan、Lanting Xu、Xianhua Pan
DOI:10.1039/c8ob00601f
日期:——
We present a novel, efficient, and regioselective method for the rhodium-catalyzed direct C–H ortho-halogenation of anilines that involves a removable N-nitroso directing group. This method featured mild reaction conditions, wide substrate scope, good functional group tolerance and satisfactory yields. To maintain the high ortho-regioselectivity and conversion, increasing the steric hindrance of the