21719-90-4Relevant academic research and scientific papers
Synthesis of aminoisoquinolines via Rh-catalyzed [4 + 2] annulation of benzamidamides with vinylene carbonate
Huang, Xin,Xu, Yingying,Li, Jianglian,Lai, Ruizhi,Luo, Yi,Wang, Qiantao,Yang, Zhongzhen,Wu, Yong
supporting information, p. 3518 - 3521 (2021/06/12)
A new strategy is developed for the synthesis of 1-aminoisoquinoline derivatives. This Rh(III)-catalyzed [4 + 2] annulation reaction employs benzamidines as efficient directing groups and the vinylene carbonate as an acetylene surrogate. Additionally, the reaction features broad substrate scopes and good yields, only producing carbonate anion as byproduct.
Metal-Free Synthesis of Polysubstituted Imidazolinone Through Cyclization of Amidines with 2-Substituted Acrylates
Liu, Zhen,Zhang, Yan-Shun,Wei, Yin,Shi, Min
supporting information, p. 1093 - 1099 (2020/02/27)
Polysubstituted imidazolinones were synthesized in a facile metal-free cascade nucleophilic cyclization of easily available amidines and 2-substituted acrylates. This protocol is distinguished by simple, mild, and catalyst-free reaction conditions with a broad substrate scope, affording the desired products in moderate to good yields and providing an efficient strategy for synthesis of polysubstituted imidazolinone.
Unaromatized Tetrahydrobenzimidazole Synthesis from p-Benzoquinone and N-Arylamidines and their Cytotoxic Potential
Tran, Minh Quan,Nguyen, Thanh Binh,Sawadogo, Wamtinga Richard,Ermolenko, Ludmila,Song, Sungmi,Retailleau, Pascal,Diederich, Marc,Al-Mourabit, Ali
supporting information, p. 5878 - 5884 (2018/10/09)
A diverse set of unaromatized and densely functionalized tetrahydrobenzimidazole adducts were obtained in good yields by simple mixing p-benzoquinone 1 with N-arylamidines 2 under mild conditions. The main features of these adducts include a hemi N,O-acet
Phosphorescent Cyclometalated Platinum(II) aNHC Complexes
Soellner, Johannes,Strassner, Thomas
supporting information, p. 15603 - 15612 (2018/09/25)
The synthesis and characterization of the first bidentate C^C* cyclometalated platinum(II) complexes based on abnormal N-heterocyclic carbenes (aNHC) is presented. The aNHC ligand precursors are prepared from benzonitriles and anilines to form 1,2,3-trisu
Vanadium-Catalyzed Oxidative C(CO)-C(CO) Bond Cleavage for C-N Bond Formation: One-Pot Domino Transformation of 1,2-Diketones and Amidines into Imides and Amides
Digwal, Chander Singh,Yadav, Upasana,Ramya, P. V. Sri,Sana, Sravani,Swain, Baijayantimala,Kamal, Ahmed
, p. 7332 - 7345 (2017/07/26)
A novel vanadium-catalyzed one-pot domino reaction of 1,2-diketones with amidines has been identified that enables their transformation into imides and amides. The reaction proceeds by dual acylation of amidines via oxidative C(CO)-C(CO) bond cleavage of 1,2-diketones to afford N,N′-diaroyl-N-arylbenzamidine intermediates. In the reaction, these intermediates are easily hydrolyzed into imides and amides through vanadium catalysis. This method provides a practical, simple, and mild synthetic approach to access a variety of imides as well as amides in high yields. Moreover, one-step construction of imide and amide bonds with a long-chain alkyl group is an attractive feature of this protocol.
Facile N-arylation of amidines and N,N-disubstituted amidines
Yao, Tuanli
supporting information, p. 4623 - 4626 (2015/07/08)
A metal-free method for the N-arylation of amidines and N,N-disubstituted amidines using o-silylaryl triflate under very mild reaction conditions is developed. The reactions are compatible with a variety of functional groups. Imines can also be N-arylated by this method. Preparation of substituted phenanthridines via a Pd catalyzed intramolecular cyclization of the iodine containing N-arylation product is demonstrated.
LIGHT-EMITTING MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE, ORGANIC ELECTROLUMINESCENT DEVICE USING SAME, AND MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE
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Paragraph 0356-0359, (2016/10/08)
Disclosed are a novel fused cyclic compound having excellent light emitting efficiency and thermal stability, a method for producing the same, and an organic electroluminescent device including the same compound. The fused cyclic compound is represented b
Copper-catalyzed oxidative diamination of terminal alkynes by amidines: Synthesis of 1,2,4-trisubstituted imidazoles
Li, Jihui,Neuville, Luc
supporting information, p. 1752 - 1755 (2013/06/26)
An efficient copper-catalyzed synthesis of 1,2,4-trisubstituted imidazoles using amidines and terminal alkynes has been developed. Overall, the oxidative process, which involves Na2CO3, pyridine, a catalytic amount of CuCl2/sub
Synthesis of benzimidazoles by PIDA-promoted direct C(sp2)-H imidation of N-arylamidines
Huang, Jinbo,He, Yimiao,Wang, Yong,Zhu, Qiang
supporting information, p. 13964 - 13967 (2013/01/15)
A metal-free synthesis of diversified benzimidazoles from N-arylamidines through a phenyliodine(III) diacetate (PIDA) promoted intramolecular direct C(sp2)-H imidation has been developed. The reaction proceeds smoothly at 0 °C or ambient temperature to provide the desired products in good to excellent yields. The synthesis of 2-alkyl- or 2-alkyl-fused benzimidazoles, which are generally inaccessible by similar Pd- or Cu-catalyzed approaches, can also be achieved. Copyright
