Manganese-Catalyzed Regioselective Dehydrogenative C- versus N-Alkylation Enabled by a Solvent Switch: Experiment and Computation
作者:Jannik C. Borghs、Viktoriia Zubar、Luis Miguel Azofra、Jan Sklyaruk、Magnus Rueping
DOI:10.1021/acs.orglett.0c01270
日期:2020.6.5
base metal-catalyzed regioselective dehydrogenative alkylation of indolines using readily available alcohols as the alkylating reagent is reported. A single air- and moisture-stable manganese catalyst provides access to either C3- or N-alkylated indoles depending on the solvent used. Mechanistic studies indicate that the reaction takes place through a combined acceptorless dehydrogenation and hydrogen
Iron-Catalyzed Direct C3-Benzylation of Indoles with Benzyl Alcohols through Borrowing Hydrogen
作者:Giovanni Di Gregorio、Michele Mari、Francesca Bartoccini、Giovanni Piersanti
DOI:10.1021/acs.joc.7b01603
日期:2017.8.18
We present the coupling of primary and secondary benzylalcohols with indoles to form 3-benzylated indoles and H2O that is catalyzed, for the first time, by a complex of earth-abundant iron. This transformation accommodates a variety of substrates and is distinguished by its operational simplicity, sustainability, high functional-group tolerance, and amenability to gram-scale synthesis. On the basis
Nickel-catalyzed C3-alkylation of indoles with alcohols <i>via</i> a borrowing hydrogen strategy
作者:Miao Hu、Yong Jiang、Nan Sun、Baoxiang Hu、Zhenlu Shen、Xinquan Hu、Liqun Jin
DOI:10.1039/d1nj01581h
日期:——
An efficient Ni-catalyzed C3-alkylation of indoles with alcohols via a borrowing hydrogen pathway was achieved utilizing an N,O-donor coordinated nickel complex as the precatalyst.
Cobalt-catalysed CH-alkylation of indoles with alcohols by borrowing hydrogen methodology
作者:Bei Zhou、Zhuang Ma、Asma M. Alenad、Carsten Kreyenschulte、Stephan Bartling、Matthias Beller、Rajenahally V. Jagadeesh
DOI:10.1039/d2gc00469k
日期:——
interesting class of heterocyclic compounds widely used in organic synthesis and medicinal chemistry. Key for this synthesis is the use of specific cobalt-nanoparticles supported on N-doped carbon, which were conveniently prepared by the pyrolysis of a templated material generated in situ by mixing cobalt-nitrate, zinc-nitrate, 2,6-diaminopyridine, and colloidal silica, and subsequent removal of silica
报道了吲哚与醇的一般多相钴催化 CH-烷基化。利用这种直接的借氢方法,一系列取代和官能化的吲哚很容易与包括甲醇在内的苄醇、杂环醇和脂肪醇偶联,以制备 >65 个取代的吲哚,产率从良好到优异。所得产物代表了广泛用于有机合成和药物化学的一类有趣的杂环化合物。该合成的关键是使用负载在 N 掺杂碳上的特定钴纳米颗粒,这些纳米颗粒是通过混合硝酸钴、硝酸锌、2,6-二氨基吡啶和胶体二氧化硅,然后除去二氧化硅。
Multi-hydroxyl POSS supported iridium complexes as a recyclable catalyst for selective synthesis of N-/C-substituted indoles and the total synthesis of HIV-1 fusion inhibitor
作者:Jiahao Li、Li Chen、Likui Wang、Gang Shi、Dawei Wang
DOI:10.1016/j.jcat.2023.115205
日期:2024.1
pyridyl-thiadiazole ligand has been designed, synthesized, and employed in the preparation of a heterogeneous iridium catalyst supported on multi-hydroxyl polyhedral oligomeric silsesquioxane. The as-prepared catalyst exhibits excellent catalytic activity in the one-pot cascade selective synthesis of N-/C-substituted indole derivatives from amino alcohols and alcohols borrowing hydrogen strategy. Meanwhile