100191-80-8Relevant academic research and scientific papers
Efficient method for the synthesis of chiral pyrrolidine derivatives via ring-closing enyne metathesis reaction
Yang, Qian,Alper, Howard,Xiao, Wen-Jing
, p. 769 - 771 (2007)
(Chemical Equation Presented) A series of new pyrrolidine derivatives were prepared directly in very good yields, from the substrates containing a basic or nucleophilic N atom via ring-closing enyne metathesis reaction under mild reaction conditions. More
Copper(i)-catalysed intramolecular hydroarylation-redox cross-dehydrogenative coupling ofN-propargylanilines with phosphites
Li, Guangzhe,Yu, Guo,Wang, Chengdong,Morita, Taiki,Zhang, Xuhai,Nakamura, Hiroyuki
, p. 113 - 116 (2021/12/29)
Intramolecular hydroarylation-redox cross-dehydrogenative coupling ofN-propargylanilines with phosphite diesters proceeded in the presence of Cu(i)-catalysts (20 mol%) to selectively give 2-phosphono-1,2,3,4-tetrahydroquinolines in good yields with 100% atomic utilization. P-H and two C-H bonds are activated at once and these hydrogen atoms are trapped by a propargylic triple bond in the molecule.
Zinc(ii)-catalyzed intramolecular hydroarylation-redox cross-dehydrogenative coupling of N -propargylanilines with diverse carbon pronucleophiles: Facile access to functionalized tetrahydroquinolines
Li, Guangzhe,Wang, Chengdong,Li, Yueqing,Shao, Kun,Yu, Guo,Wang, Shisheng,Guo, Xiuhan,Zhao, Weijie,Nakamura, Hiroyuki
, p. 7333 - 7336 (2020/07/23)
Zinc(ii)-catalyzed intramolecular hydroarylation-redox cross-dehydrogenative coupling of N-propargylanilines with two types of carbon pronucleophiles (nitromethane as a sp3 carbon pronucleophile and phenylacetylenes as sp carbon pronucleophiles) proceeded to give the 2-substituted tetrahydroquinolines in good yields with 100percent atomic utilization without any additional external oxidants.
Synthesis of 2-Indolyltetrahydroquinolines by Zinc(II)-Catalyzed Intramolecular Hydroarylation-Redox Cross-Dehydrogenative Coupling of N-Propargylanilines with Indoles
Li, Guangzhe,Nakamura, Hiroyuki
supporting information, p. 6758 - 6761 (2016/06/09)
An intramolecular hydroarylation-redox cross-dehydrogenative coupling (CDC) of propargylic anilines with indoles proceeded in the presence of zinc(II) catalysts to give 2-indolyltetrahydroquinolines in good to high yields. Three C-H bonds (two sp2and one sp3) are activated in one shot and these hydrogen atoms are trapped by a propargylic triple bond in the molecule.
Synthesis of substituted 3-indolylimines and indole-3-carboxaldehydes by rhodium(II)-catalyzed annulation
Rajagopal, Basker,Chou, Chih-Hung,Chung, Ching-Cheng,Lin, Po-Chiao
, p. 3752 - 3755 (2014/08/05)
An efficient Cu/Rh-catalyzed method is proposed for the synthesis of 3-indolylimines from N-propargylanilines through Rh(II)-catalyzed denitrogenative annulation of N-sulfonyl-1,2,3-triazoles. Further combined with hydrolysis or reduction, a one-pot method is developed to enable the direct incorporation of an imine, aldehyde, or amine group into an indole system from an alkyne. A variety of substituted 3-indolylimines, indole-3-carboxaldehydes, and 3-Indolylmethanamines are synthesized in good yields.
Highly selective N-Alkylation of amines promoted on silica: An efficient and recyclable surface
Basu, Basudeb,Paul, Susmita,Nanda, Ashis K.
experimental part, p. 1115 - 1120 (2010/05/02)
N-Alkylation of amines suffers from competing over alkylations. At the same time, use of strong base and other harsh conditions greatly limits providing a practical, generalized and selective procedure. Activated silica gel has been found to promote N-alkylations of amines. Here, we studied N-alkylation of amines with various types of alkyl halides, which finally constitute practical, highly selective and eco-friendly conditions for mono- or bis-alkylated amines at ambient temperature with recyclability of silica.
Competitive study of Meisenheimer rearrangement in a substrate tertiary amine with allylic and propargylic moieties
Majumdar, Krishna C.,Jana, Gour H.
, p. 297 - 300 (2007/10/03)
A number of allyl aryl propargyl amines 3a-3f were synthesized in 68-82% yield. These tertiary amines were then treated with one equivalent of m-chloroperoxybenzoic acid (m-CPBA) to give products 5a-5f in 79-90% yields arising out of the Meisenheimer rear
Gas-phase thermolysis of N-substituted diallyl- and allylpropargylamines
Martin, Gonzalo,Ascanio, Julian,Rodriguez, Jesus
, p. 49 - 54 (2007/10/03)
Various diallyl- and allylpropargylamines were pyrolyzed in a stirred-flow reactor at temperatures in the range of 330-500 °C, pressures of 8-16 Torr and residence times of 0·4-2·4 s using toluene as carrier gas. The reaction products were propene, allene and aldimines. The allene to propene ratio changed considerably with the third substituent on the N atom. At conversions in the range 13-55%, the consumption of the amines showed first-order kinetics. The following Arrhenius parameters [A (s-1) and Ea (kj mol-1)] were obtained from the rate coefficients: diallyl-tert-butylamine, log A = 10·32±0·12, Ea = 139±2; diallylneopentylamine, log A = 12·87±0·26, Ea = 168±3; allylpropargyl-tert-butylamine, log A = 10·23±0·18, Ea = 126±2; allylpropargyltosylamine, log A = 13·05±0.36, Ea = 197±5; and allylpropargylphenylamine, log A = 12·10± 0·35, Ea = 162±4. Polar, six-center cyclic transition states are suggested for the elimination of propene and allene, via non-concerted bond breaking-bond forming mechanisms.
