Metal-Free Direct C-H β-Carbonyl Alkylation of Heteroarenes with Cyclopropanols Mediated by K<sub>2</sub>
S<sub>2</sub>
O<sub>8</sub>
作者:Qiang Liu、Qiang Wang、Guanqun Xie、Zeyang Fang、Shujiang Ding、Xiaoxia Wang
DOI:10.1002/ejoc.202000289
日期:2020.5.10
direct C–H β‐carbonyl alkylation of heteroarenes has been achieved through K2S2O8‐mediated ring‐opening of cyclopropanols. A wide scope of substrates, such as various substituted quinolines and isoquinolines, pyridines, pyridazine, benzo[d]thiazole, and phenanthroline, underwent the β‐carbonyl alkylation efficiently and afforded the β‐heteroarylated ketones in moderate to excellent yields.
Silver-catalyzed C2-selective direct alkylation of heteroarenes with tertiary cycloalkanols
作者:Shi-Chao Lu、Hong-Shuang Li、Shu Xu、Gui-Yun Duan
DOI:10.1039/c6ob02330d
日期:——
A silver-catalyzed regioselective C2-alkylation of heteroarenes with primary radicals produced by tertiary cycloalkanols was developed.
利用由三级环戊醇产生的一次自由基,开发了银催化的杂环芳烃的选择性C2烷基化。
Enantioselective Synthesis of Quinolizidines and Indolizidines via a Catalytic Asymmetric Hydrogenation Cascade
作者:Magnus Rueping、Lukas Hubener
DOI:10.1055/s-0030-1259955
日期:2011.6
A catalyticenantioselective synthesis of a new class of quinolizidines and indolizidines is presented. An asymmetric Bron-sted acid catalyzed hydrogenation cascade as well as a sequential Bronsted acid/metal catalyzed hydrogenation protocol of 2-substituted quinolines yields benzofused quinolizidines and indolizidines in good yields with high diastereo- and enantioselectivities.
Rapid Construction of Structurally Diverse Quinolizidines, Indolizidines, and Their Analogues via Ruthenium‐Catalyzed Asymmetric Cascade Hydrogenation/Reductive Amination
作者:Ya Chen、Yan‐Mei He、Shanshan Zhang、Tingting Miao、Qing‐Hua Fan
DOI:10.1002/anie.201812647
日期:2019.3.18
benzo‐fused quinolizidines, indolizidines, and their analogues by ruthenium‐catalyzed asymmetric cascade hydrogenation/reductive amination of quinolinyl‐ and quinoxalinyl‐containing ketones has been developed. This reaction proceeds under mild reaction conditions, affording chiral benzo‐fused aliphatic N‐heterocyclic compounds with structural diversity in good yields (up to 95 %) with excellent diastereoselectivity