在温和且可扩展的电解条件下,已开发出无金属和无氧化剂的分子内脱氢N–N键的形成。从容易获得的N-(2-吡啶基)am有效地合成了各种有价值的1,2,4-三唑并[1,5- a ]吡啶。反应在恒定电流条件下,在简单的不分隔电池中进行,其中n Bu 4 NBr作为氧化还原介体和电解质。该方案适用于抗糖尿病化合物关键中间体的有效合成。
readily synthesized from N-(pyridin-2-yl)benzimidamides via phenyliodine bis(trifluoroacetate)-mediated intramolecular annulation. This novel strategy allows for the convenient construction of a 1,2,4-triazolo[1,5-a]pyridine skeleton through direct metal-free oxidative N–N bond formation, featuring a short reaction time and high reaction yields.
具有生物学重要性的1,2,4-三唑并[1,5- a ]吡啶很容易通过苯基碘双(三氟乙酸)介导的分子内环化反应从N-(吡啶-2-基)苯甲酰胺酰胺合成。这种新颖的策略允许通过直接形成无金属的氧化性N–N键来方便地构建1,2,4-三唑并[1,5- a ]吡啶骨架,其反应时间短且反应产率高。
A convenient regioselective synthesis of (2E)-2-[2,3,6-triarylpyrimidin-4(3H)-ylidene]acetonitriles through ring transformation reactions
作者:Umesh D. Patil、Pramod P. Mahulikar
DOI:10.1016/j.tetlet.2012.11.044
日期:2013.1
We report a greener, economical, highly convenient and regioselective synthesis of (2E)-2-[2,3,6-arylpyrimidin-4(3H)-ylidene)acetonitriles derivatives 3. This is achieved by a strategy involving ring transformation reaction of 4-(methylthio)-2-oxo-6-aryl-2H-pyran-3-carbonitrile 1 with N-arylbenzamidine or N-arylpicolinamidine 2 in the presence of KOH/DMF catalyst at room temperature. This approach provides a one-pot approach for the synthesis of symmetrical, unsymmetrical and heteroaryl pyrimidin-4(3H)-ylidene)acetonitriles derivatives 3.[GRAPHICS](C) 2012 Elsevier Ltd. All rights reserved.
[EN] ORGANIC COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING SAME<br/>[FR] COMPOSÉ ORGANIQUE ET DISPOSITIF ÉLECTROLUMINESCENT ORGANIQUE LE COMPRENANT<br/>[KO] 유기 화합물 및 이를 포함하는 유기 전계 발광 소자
申请人:DOOSAN CORP
公开号:WO2017209487A1
公开(公告)日:2017-12-07
본 발명은 신규 화합물 및 이를 포함하는 유기 전계 발광 소자에 관한 것으로서, 본 발명에 따른 화합물은 유기 전계 발광 소자의 유기물층, 바람직하게는 발광층, 전자 수송층 또는 전자 수송 보조층에 사용됨에 따라 유기 전계 발광 소자의 발광 효율, 구동 전압, 수명 등을 향상시킬 수 있다.
Intramolecular electrochemical dehydrogenative N–N bond formation for the synthesis of 1,2,4-triazolo[1,5-<i>a</i>]pyridines
scalable electrolytic conditions. Various valuable 1,2,4-triazolo[1,5-a]pyridines were synthesized efficiently from the readily available N-(2-pyridyl)amidines. The reactions were conducted in a simple undivided cell under constant current conditions with nBu4NBr as both the redox mediator and the electrolyte. This protocol was applied to the efficient synthesis of key intermediates for anti-diabetic compounds
在温和且可扩展的电解条件下,已开发出无金属和无氧化剂的分子内脱氢N–N键的形成。从容易获得的N-(2-吡啶基)am有效地合成了各种有价值的1,2,4-三唑并[1,5- a ]吡啶。反应在恒定电流条件下,在简单的不分隔电池中进行,其中n Bu 4 NBr作为氧化还原介体和电解质。该方案适用于抗糖尿病化合物关键中间体的有效合成。
The dearomative annulation between N-2-pyridylamidine and CO<sub>2</sub> toward pyrido[1,2-a]-1,3,5-triazin-4-ones
A base-promoted dearomative annulation between N-2-pyridylamidine and an atmospheric pressure of CO2 was developed, affording a series of pyrido[1,2-a]-1,3,5-triazin-4-ones in moderate to excellent yields. CO2 served as a carbonyl source, releasing H2O as a solely clean byproduct. Moreover, no dehydrating reagent and transition-metal catalyst were required in this procedure. Thus, it represents a green
开发了碱促进的N -2-吡啶基lam啶与大气压CO 2之间的脱芳香环化反应,提供了一系列中等至极好的吡啶并[1,2 - a ] -1,3,5-triazin-4-ones产量。CO 2用作羰基源,释放H 2 O作为纯净的副产物。而且,在该程序中不需要脱水剂和过渡金属催化剂。因此,它代表了访问此类框架的绿色,可持续和直接途径。