Continuous flow thermolysis of azidoacrylates for the synthesis of heterocycles and pharmaceutical intermediates
作者:Alexander G. O'Brien、François Lévesque、Peter H. Seeberger
DOI:10.1039/c0cc04481d
日期:——
An efficient, safe and scalable procedure for the continuous flow thermolysis of azidoacrylates to yield indoles has been developed and was applied to the synthesis of related heterocycles. The scalability of the process was demonstrated in the continuous flow synthesis of a precursor to the DAAO inhibitor 4H-furo[3,2-b]pyrrole-5-carboxylic acid.
Heteroleptic Copper(I)‐Based Complexes for Photocatalysis: Combinatorial Assembly, Discovery, and Optimization
作者:Clémentine Minozzi、Antoine Caron、Jean‐Christophe Grenier‐Petel、Jeffrey Santandrea、Shawn K. Collins
DOI:10.1002/anie.201800144
日期:2018.5.4
A library of 50 copper‐based complexes derived from bisphosphines and diamines was prepared and evaluated in three mechanistically distinct photocatalytic reactions. In all cases, a copper‐based catalyst was identified to afford high yields, where new heteroleptic complexes derived from the bisphosphine BINAP displayed high efficiency across all reaction types. Importantly, the evaluation of the library
Visible-Light Sensitization of Vinyl Azides by Transition-Metal Photocatalysis
作者:Elliot P. Farney、Tehshik P. Yoon
DOI:10.1002/anie.201308820
日期:2014.1.13
Irradiation of vinyl and aryl azides with visible light in the presence of Ru photocatalysts results in the formation of reactive nitrenes, which can undergo a variety of CN bond‐forming reactions. The ability to use low‐energy visible light instead of UV in the photochemical activation of azides avoids competitive photodecomposition processes that have long been a significant limitation on the synthetic
在 Ru 光催化剂存在下用可见光照射乙烯基和芳基叠氮化物会导致反应性氮烯的形成,氮烯可以进行各种 C N 键形成反应。在叠氮化物的光化学活化中使用低能可见光代替紫外线的能力避免了竞争性光分解过程,而竞争性光分解过程长期以来一直是这些反应合成应用的重大限制。
TRIPLET FUSION UPCONVERSION FOR INFRARED-SENSITIZED PHOTOREDOX CHEMISTRY
申请人:CAMPOS LUIS M.
公开号:US20190275151A1
公开(公告)日:2019-09-12
Various exemplary photoreactions can be provided, including reactions generally based on triplet-triplet annihilation upconversion. Representative photosensitizers include PdPc(OBu)8 and PtTPTNP. Representative annihilators include FDPP and TTBP. Such exemplary photoreactions, systems and methods may be used in a variety of applications, including various biological or physical applications. Exemplary methods can also be provided for making or using such systems, photoreactions, kits including such systems, or the like.
Triplet fusion upconversion for infrared-sensitized photoredox chemistry
申请人:The Trustees of Columbia University in the City of New York
公开号:US10980883B2
公开(公告)日:2021-04-20
Various exemplary photoreactions can be provided, including reactions generally based on triplet-triplet annihilation upconversion. Representative photosensitizers include PdPc(OBu)8 and PtTPTNP. Representative annihilators include FDPP and TTBP. Such exemplary photoreactions, systems and methods may be used in a variety of applications, including various biological or physical applications. Exemplary methods can also be provided for making or using such systems, photoreactions, kits including such systems, or the like.