An efficient and recyclable AgNO3/ionic liquid system catalyzed atmospheric CO2 utilization: Simultaneous synthesis of 2-oxazolidinones and α-hydroxyl ketones
AgNO3/ionic liquid (IL) catalytic system was developed for the simultaneous synthesis of these compounds through the atom-economical three-component reactions of propargyl alcohols, 2-aminoethanols, and CO2. Notably, this system behaved excellent catalytic activity with the lowermost metal loading of 0.25 mol%. Meanwhile, it is the first reported metal-catalyzed system that could efficiently work under
Thermodynamically Favorable Synthesis of 2-Oxazolidinones through Silver-Catalyzed Reaction of Propargylic Alcohols, CO<sub>2,</sub>
and 2-Aminoethanols
作者:Qing-Wen Song、Zhi-Hua Zhou、Mei-Yan Wang、Kan Zhang、Ping Liu、Jia-Yao Xun、Liang-Nian He
DOI:10.1002/cssc.201600470
日期:2016.8.23
Development of catalytic routes to incorporate CO2 into carbonylcompounds at mild conditions remains attractive and challenging. Herein, a one‐pot three‐component cascade reaction of terminal propargylic alcohols, CO2, and 2‐aminoethanols through AgI‐based catalysis is reported for the synthesis of carbonylcompounds through C−O/C−N bond formation. This thermodynamically favorable route can be ingeniously
unprecedented heteroannulation process created four chemical bonds in a single operation with the isocyano group acting formally as a polarized double bond and phenyl vinyl selenone as a latent 1,3‐dipole. The phenylselenonyl group played a triple role as an electron‐withdrawing group to activate the 1,4‐addition, a leaving group, and a latent oxidant in this transformation.
在催化量的Cs 2 CO 3存在下,烷基异氰化物,苯基乙烯基硒酮和水的反应得到了恶唑烷-2-酮,收率很高。这种空前的异环化过程在一次操作中产生了四个化学键,异氰基在形式上起极化双键作用,苯基乙烯基硒酮起潜在的1,3-偶极作用。苯基硒壬基在该转化过程中作为吸电子基团发挥了三重作用,以激活1,4加成,一个离去基团和一个潜在的氧化剂。
DIHYDROINDOLONE COMPOUNDS, A PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
申请人:Lacoste Vincent
公开号:US20130331380A1
公开(公告)日:2013-12-12
Compounds of formula (I):
wherein:
m and n represent 1 or 2,
A represents a pyrrolyl group,
X represents a C(O), S(O) or SO
2
group,
R
1
and R
2
represent an alkyl group
or, together with the nitrogen atom carrying them, form a heterocyclic group,
R
3
and R
4
, together with the atoms carrying them, form a heterocyclic group,
R
5
represents a hydrogen atom or an alkyl group,
R
6
represents a hydrogen atom or a halogen atom.
Medicinal products containing the same which are useful in treating cancer.
Nouveaux dérivés dihydroindolones, leur procédé de préparation et les compositions pharmaceutiques qui les contiennent
申请人:Les Laboratoires Servier
公开号:EP2281822A1
公开(公告)日:2011-02-09
Composés de formule (I) :
dans laquelle :
◆ m et n représentent 1 ou 2,
◆ A représente un groupement pyrrolyle,
◆ X représente le groupement C(O), S(O) ou SO2,
◆ R1 et R2 représentent un groupement alkyle, ou forment ensemble avec l'atome d'azote qui les porte un groupement hétérocyclique,
◆ R3 et R4 forment ensemble avec les atomes qui les portent un groupement hétérocyclique,
◆ R5 représente un atome d'hydrogène ou un groupement alkyle,
◆ R6 représente un atome d'hydrogène ou un atome d'halogène,
式(I)化合物:
其中:
◆ m 和 n 代表 1 或 2、
◆ A 代表吡咯基团、
◆ X 代表基团 C(O)、S(O)或 SO2、
R1 和 R2 代表烷基,或与携带它们的氮原子一起构成杂环基团、
R3 和 R4 与携带它们的原子一起构成杂环基团、
◆ R5 代表氢原子或烷基、
◆ R6 代表氢原子或卤素原子、