Highly efficient Lewis acid-catalysed Pictet–Spengler reactions discovered by parallel screeningElectronic supplementary information (ESI) available: full experimental procedures. See http://www.rsc.org/suppdata/cc/b2/b212063a/
Syntheses of tetrahydro-β-carbolines via a tandem hydroformylation–Pictet–Spengler reaction. Scope and limitations
作者:Bojan P. Bondzic、Peter Eilbracht
DOI:10.1039/b809157a
日期:——
A novel one-pot synthesis of tetrahydro-beta-carboline systems via tandem hydroformylation-Pictet-Spengler reaction starting from olefins and aryl ethylamines is described. This tandem procedure allows fast and convenient synthesis of various substituted tetrahydro-beta-carbolines.
Dehydrogenation of N-Heterocycles by Superoxide Ion Generated through Single-Electron Transfer
作者:Yuan-Qiong Huang、Hong-Jian Song、Yu-Xiu Liu、Qing-Min Wang
DOI:10.1002/chem.201705202
日期:2018.2.9
some of the methods are hampered by long reaction times, harsh conditions, and the need for catalysts that are not readily available. This work reports a novel method for dehydrogenation of N‐heterocycles. Specifically, O2.− generated in situ acts as the oxidant for N‐heterocycle substrates that are susceptible to oxidation through a hydrogen atom transfer mechanism. This method provides a general
The first asymmetric transfer hydrogenation of cyclic imines and iminiums in water was successfully performed in high yields and enantioselectivities with sodium formate as the hydrogen source and CTAB as an additive catalyzed by a water-soluble and recyclable ruthenium(II) complex of the ligand (R,R)-2.
以甲酸钠为氢源,CTAB 为添加剂,在配体 (R,R)-2 的水溶性可回收钌 (II) 复合物催化下,首次成功地在水中对环状亚胺和亚胺进行了不对称转移加氢反应,并获得了较高的产率和对映选择性。
Simple and efficient synthesis of tetrahydro-β-carbolines via the Pictet–Spengler reaction in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP)
作者:Li-Na Wang、Su-Li Shen、Jin Qu
DOI:10.1039/c4ra03628j
日期:——
1,1,1,3,3,3-Hexafluoro-2-propanol (HFIP) can act as both the solvent and the catalyst to effectively promote the Pictet–Spengler reaction.
Carboxyl-mediated pictet-spengler reaction. Direct synthesis of 1,2,3,4-tetrahydro β-carbolines from tryptamine-2-carboxylic acids.
作者:Krishnaswamy Narayanan、James M Cook
DOI:10.1016/s0040-4039(00)97406-9
日期:1990.1
The Pictet-Spengler condensation of various tryptamine-2-carboxylicacids 1 with carbonyl compounds in benzene/dioxane/trifiuoroacetic acid (Table) with simultaneous loss of carbon dioxide, afforded directly the corresponding 1,2,3,4-tetrahydro β-carbolines 4 in good to excellent yields.