黄金催化的三组分环合反应以 多样性为导向合成吡唑并[4,3- b ]吲哚:在开发新型CK2抑制剂中的应用†
摘要:
基于对先前报道的苯基吡唑型CK2抑制剂的结合模式分析,将吡唑并[4,3- b ]吲哚衍生物设计为新型CK2抑制剂化合物。一系列吡唑并[4,3-的b ]吲哚和相关二氢[4,3- b ]吲哚进行有效地从使用金催化的三组分环反应作为关键步骤简单的起始原料制备。一些新合成的化合物显示出高水平的抑制活性,表明吡唑并[4,3- b ]吲哚核代表了有效的CK2抑制剂开发的有希望的支架。
Highly chemoselective reduction of azides to amines by Fe(0) nanoparticles in water at room temperature
作者:Subir Panja、Debasish kundu、Sabir Ahammed、Brindaban C. Ranu
DOI:10.1016/j.tetlet.2017.07.076
日期:2017.8
A highly chemoselective reduction of aryl, heteroaryl, acyl and sulfonylazides to the corresponding amines has been achieved by Fe(0) nanoparticles in water at roomtemperature in the absence of external hydride source. Several readily reducible functionalities including alkene, alkyne, S-S linkage, OTBDMS remain unaffected during reduction.
Copper-Catalyzed Vicinal Cyano-, Thiocyano-, and Chlorophosphorylation of Alkynes: A Phosphinoyl Radical-Initiated Approach for Difunctionalized Alkenes
作者:Ze-Kun Tao、Cheng-Kun Li、Jian-An Li、Adedamola Shoberu、Wei Zhang、Jian-Ping Zou
DOI:10.1021/acs.orglett.1c01286
日期:2021.6.4
A copper-catalyzed difunctional cyano-, thiocyano-, and chlorophosphorylation reaction of alkynes with P(O)–Hcompounds and coupling partners (TBACN, TMSNCS, TMSCl) is described. The reaction introduces versatile groups (−P(O)R2 and −CN, −SCN, or −Cl) to form tri- and tetrasubstituted alkenyl phosphine oxides/phosphonates regio- and stereoselectively.
Electrophilic indole? Indoles, which are typically nucleophilic, can be made electrophilic throughgoldcatalysis. By using an ortho‐azido group to deliver a nitrene intramolecularly, an arylalkyne is converted into a gold carbene intermediate containing an indole skeleton that is highly electrophilic at the 3‐position. A range of functionalized indoles is readily accessed by utilizing this strategy