Diastereoselective Biomimetic Synthesis of Dimeric Tetrahydrocarbazoles via a Copper(II)‐Catalyzed Cycloisomerization‐[3+2] Cyclodimerization Cascade
作者:Debayan Roy、Beeraiah Baire
DOI:10.1002/anie.202304557
日期:2023.7.3
CuII-catalyzed, diastereoselective, biomimetic cycloisomerization-[3+2] cyclodimerization of 1-(indol-2-yl)pent-4-yn-3-ols to access structurally unprecedented dimeric-tetrahydrocarbazoles is reported. Control experiments, isolation of monomer intermediates and their conversion into cyclodimerized products delineated the dimerization as being either homochiral or heterochiral [3+2] annulation of in situ generated
据报道,发现并开发了 Cu II催化、非对映选择性、仿生环异构化-[3+2] 1-(indol-2-yl)pent-4-yn-3-ols 环二聚反应,以获得结构上前所未有的二聚四氢咔唑。对照实验、单体中间体的分离及其转化为环二聚产物将二聚化描述为原位生成的单体的同手性或异手性[3+2]环化。
Catalyst‐ and Substrate‐Controlled Regiodivergent Synthesis of Carbazoles through Gold‐Catalyzed Cyclizations of Indole‐Functionalized Alkynols
作者:Marta Solas、Miguel A. Muñoz‐Torres、Fernando Martínez‐Lara、Lorena Renedo、Samuel Suárez‐Pantiga、Roberto Sanz
DOI:10.1002/cplu.202300382
日期:2023.11
positions an indol-3-yl and an additional group has been described. The nature of R2 is crucial for the regiocontrol, promoting the 1,2-alkyl migration with electron-richaromatics. In addition, whereas gold(III) salts favor the 1,2-alkenyl shift, gold(I) complexes are more prone to promote 1,2-alkyl migrations.