dictyodendrins A-F的总合成是通过金(I)催化的共轭二炔与N -Boc-吡咯的环化反应直接构建吡咯并[2,3- c ]咔唑支架而实现的。所得吡咯并[2,3– c ]咔唑的后期官能化引入各种取代基提供了对十二碳四烯联苯醚的不同途径。一些双齿豆蔻甙类似物对CDK2 / CycA2和GSK3表现出抑制活性。
The present invention aims to provide a compound having a PDE inhibitory action and useful as a medicament for the prophylaxis or treatment of schizophrenia and the like.
A compound represented by the formula (1
x
):
wherein each symbol is as described in the DESCRIPTION, or the formula (1):
W
1
—W
2
(1)
wherein each symbol is as described in the DESCRIPTION,
or a salt thereof.
A novel and efficient Fe‐catalyzed direct C−H amination (NH2) of arenes is reported using a new redox‐active aminating reagent. The reaction is simple, and can be performed under air, mild, and redox‐neutral conditions. This protocol has a broad substrate scope and could be used in the late‐stage modification of bioactive compounds. Mechanistic studies demonstrate that a radical pathway could be involved
[EN] METHOD FOR PRODUCING 1-HEXENE<br/>[FR] PROCÉDÉ DE PRODUCTION D'1-HEXÈNE
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012133937A1
公开(公告)日:2012-10-04
Disclosed is a method for producing 1-hexene that is capable of reducing the amount of by-product polymers when 1-hexene is produced through the trimerization reaction of ethylene. The method for producing 1-hexene comprises the following steps 1 and 2: step 1: the step of preparing a catalytic component by bringing a transition metal complex represented by any one of formulae (1-1) to (1-3) into contact with a specific organic aluminum compound in the absence of ethylene; and step 2: the step of trimerizing ethylene in the presence of a catalyst obtainable by bringing the catalytic component obtained in step 1 into contact with a specific boron compound.
[EN] METHOD FOR PRODUCING THE TRANSITION METAL ION COMPLEX, CATALYST FOR TRIMERIZATION, AND METHOD FOR PRODUCING 1-HEXENE<br/>[FR] PROCÉDÉ DE PRODUCTION D'UN COMPLEXE ION MÉTAL DE TRANSITION, CATALYSEUR DE TRIMÉRISATION, ET PROCÉDÉ DE PRODUCTION DE 1-HEXÈNE
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012133929A1
公开(公告)日:2012-10-04
An object of the present invention is to provide a silicon-bridged Cp-Ar transition metal complex that serves as a catalytic component capable of efficiently and highly selectively producing 1-hexene through the trimerization reaction of ethylene. The present invention provides a transition metal ion complex represented by any of formulae (1-1) to (1-3), etc.: wherein M represents a transition metal atom of Group 4 of the Periodic Table of the Elements; A represents a counter anion; R1, R2, R3, R4, R5, R6, R7, R8, R9, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, X1 and X2 each independently represent a hydrogen atom or the like; R10 and R11 each independently represent a hydrogen atom or the like.
Catalytic Enantioselective Synthesis of Mariline A and Related Isoindolinones through a Biomimetic Approach
作者:Chang Min、Yingfu Lin、Daniel Seidel
DOI:10.1002/anie.201709182
日期:2017.11.27
The catalytic enantioselective synthesis of isoindolinones was achieved through the condensation of 2‐acyl‐benzaldehydes and anilines. In the presence of 1 mol % of a chiral phosphoric acid catalyst, reactions reach completion within 10 min and provide products with up to 98 % ee. Anilines with an ortho t‐butyl group form atropisomeric products, thereby enabling the simultaneous generation of axial