Divergent Dehydrogenative Coupling of Indolines with Alcohols
作者:Xue Jiang、Weijun Tang、Dong Xue、Jianliang Xiao、Chao Wang
DOI:10.1021/acscatal.6b03667
日期:2017.3.3
The dehydrogenativecoupling of indolines with alcohols catalyzed by an iridium complex has been achieved to afford both N- and C3-alkylated indoles selectively, by simply changing the addition time of a base additive. The iridacycle catalyst plays multiple roles in these reactions, which dehydrogenates both amines and alcohols and catalyzes the coupling reactions. Mechanistic studies reveal that a
Redox Isomerization via Azomethine Ylide Intermediates: <i>N</i>-Alkyl Indoles from Indolines and Aldehydes
作者:Indubhusan Deb、Deepankar Das、Daniel Seidel
DOI:10.1021/ol1031359
日期:2011.2.18
Indolines react with aromatic and heteroaromatic aldehydes to yield N-alkyl indoles in a benzoic acid catalyzed redox isomerization reaction. Azomethine ylides are intermediates in this process which was established by intramolecular [3 + 2] trapping experiments.
The concisesynthesis of the pyrrolophenanthridinealkaloids such as anhydrolycorine, assoanine, anhydrolycorin-7-one, and oxoassoanine, was achieved using the Pd-catalyzed biaryl coupling reaction of 1-(2-halobenzyl)-2,3-dihydroindole by applying the regioselective C-H activation method with intramolecular coordination of the benzylamino group to Pd.
Nickel-Catalyzed Direct Synthesis of <i>N</i>-Substituted Indoles from Amino Alcohols and Alcohols
作者:Vinita Yadav、Sayali G. Jagtap、Ekambaram Balaraman、Santosh B. Mhaske
DOI:10.1021/acs.orglett.2c03617
日期:2022.12.16
primary alcohols, cyclic and acyclic secondary alcohols, and various substituted 2-aminophenyl ethyl alcohols are employed in the reactionconditions to provide a diverse range of N-alkylated indoles. Mechanistic studies revealed that the reaction proceeds through tandem N-alkylation via hydrogen autotransfer followed by the cyclization of N-alkylated alcohol intermediate.