Gold‐Catalyzed Cascade and Divergent Synthesis of Indolobenzazepines and Indoloquinolines from Nitrogen‐Tethered 1,8‐Diynes
摘要:
AbstractWe describe the divergent construction of two nitrogen‐containing polycyclic systems by gold‐catalyzed cycloisomerizations. The gold‐catalyzed cascade hydroamination and 7‐endo‐dig‐selective cycloisomerization of nitrogen‐tethered 1,8‐diynes yielded indolo[1,7‐ab]benzazepines in one pot. In contrast, when Johnphos‐coordinated gold catalyst was used, the same 1,8‐diynes were transformed into indolo[1,2‐a]quinolines by 6‐endo‐dig‐selective cycloisomerization along with rearrangement of the substituent on one of the alkynes. The reaction of a naphthalene‐tethered substrate provided a helically chiral aza[6]helicene.
Synthesis of L–Au(I)–CF<sub>2</sub>H Complexes and Their Application as Transmetalation Shuttles to the Difluoromethylation of Aryl Iodides
作者:Patricia García-Domínguez
DOI:10.1021/acs.organomet.1c00305
日期:2021.9.13
formed in the presence of base, have been identified as intermediate complexes involved in these transformations. The application of these compounds as “CF2H transmetalation shuttles” from gold to palladium has been demonstrated in a Pd-catalyzed difluoromethylation reaction of aryliodides, in which the Au-to-Pd transfer of “CF2H” is feasible under stoichiometric conditions. These findings will pave the
我们在此描述了两种替代方案,以有效地制备带有不同电子和空间特性的辅助配体的二氟甲基金 (I) 配合物。LAu-OX(X = H 和t- Bu)物质在碱存在下形成,已被确定为参与这些转化的中间复合物。这些化合物作为从金到钯的“CF 2 H 金属转移穿梭”的应用已在 Pd 催化的芳基碘化物的二氟甲基化反应中得到证明,其中“CF 2 H”的 Au 到 Pd 的转移在化学计量下是可行的状况。这些发现将为金化学中的催化歧管铺平道路。
Alkyne Difunctionalization by Dual Gold/Photoredox Catalysis
作者:Adrian Tlahuext-Aca、Matthew N. Hopkinson、R. Aleyda Garza-Sanchez、Frank Glorius
DOI:10.1002/chem.201600710
日期:2016.4.18
Highly selective tandem nucleophilic addition/cross‐coupling reactions of alkynes have been developed usingvisible‐light‐promoted dual gold/photoredoxcatalysis. The simultaneous oxidation of AuI and coordination of the coupling partner by photo‐generated aryl radicals, and the use of catalytically inactive gold precatalysts allows for high levels of selectivity for the cross‐coupled products without
MIXED LIGAND GOLD(I) COMPLEXES AS ANTI-CANCER AGENTS
申请人:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
公开号:US20170305942A1
公开(公告)日:2017-10-26
Gold(I) complex with mixed ligands as an anticancer agent. The gold(I) ion is coordinated to a dithiocarbamate ligand and a phosphorus-containing ligand (e.g. phosphines). Also described are a pharmaceutical composition incorporating the gold(I) complex, a methods of synthesizing the gold(I) complex, and a method for treating cancer.
Mixed ligand gold(I) complexes as anti-cancer agents
申请人:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
公开号:US10077280B2
公开(公告)日:2018-09-18
Gold(I) complex with mixed ligands as an anticancer agent. The gold(I) ion is coordinated to a dithiocarbamate ligand and a phosphorus-containing ligand (e.g. phosphines). Also described are a pharmaceutical composition incorporating the gold(I) complex, a methods of synthesizing the gold(I) complex, and a method for treating cancer.
Composition containing a gold (I) complex and cancer cells
申请人:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
公开号:US10093689B1
公开(公告)日:2018-10-09
Gold(I) complex with mixed ligands as an anticancer agent. The gold(I) ion is coordinated to a dithiocarbamate ligand and a phosphorus-containing ligand (e.g. phosphines). Also described are a pharmaceutical composition incorporating the gold(I) complex, a methods of synthesizing the gold(I) complex, and a method for treating cancer.