72755-10-3Relevant academic research and scientific papers
Harnessing hypervalent iodonium ylides as carbene precursors: C-H activation of: N -methoxybenzamides with a Rh(iii)-catalyst
Mayakrishnan, Sivakalai,Tamizmani, Masilamani,Maheswari, Naryanan Uma
supporting information, p. 15462 - 15465 (2020/12/25)
Hypervalent iodonium ylides expeditiously generate carbenes which undergo domino intermolecular C-H activation followed by intramolecular condensation in the presence of N-methoxybenzamide as a starting material and a Rh(iii)-catalyst to afford dihydrophenanthridines. KIE studies and DFT calculations were performed to substantiate the mechanistic pathway. To extend the synthetic utilisation, fluorescent pyranoisocoumarins were achieved by using Rh(iii)-catalyzed peri-C-H/O-H activation/annulation reactions.
Three-Component Synthesis of Isoquinoline Derivatives by a Relay Catalysis with a Single Rhodium(III) Catalyst
Zhou, Chao,Jiang, Jijun,Wang, Jun
supporting information, p. 4971 - 4975 (2019/09/03)
A rhodium(III)-catalyzed one-pot three-component reaction of N-methoxybenzamide, α-diazoester, and alkyne was developed, providing an alternative way to synthesize isoquinoline derivatives. Mechanistically, it is a relay catalysis, and the reaction occurred via successive O-alkylation and C-H activation processes, both of which were promoted by the same catalyst.
3-Hydroxyisoindolin-1-one derivates: Synthesis by palladium-catalyzed C–H activation as BRD4 inhibitors against human acute myeloid leukemia (AML) cells
Chen, Pan,Yang, Yifei,Yang, Lingyun,Tian, Jiping,Zhang, Fangqing,Zhou, Jinpei,Zhang, Huibin
, p. 119 - 125 (2019/01/30)
Bromodomain protein 4 (BRD4) is a member of the bromodomain and extra-terminal domain (BET) protein family, which plays a key role in transcriptional regulation. Recent biological and pharmacological studies have enabled linking of the BET bromodomains wi
Design, synthesis, and biological evaluation of aryl N-methoxyamide derivatives as GPR119 agonists
Jang, Yoon Kyung,Lee, Kyu Myung,Jung, Kwan-Young,Kang, Seung Kyu,Pagire, Suvarna H.,Lee, Jun Mi,Pagire, Haushabhau S.,Kim, Kwang Rok,Bae, Myung Ae,Lee, Hohjai,Rhee, Sang Dal,Ahn, Jin Hee
, p. 3909 - 3914 (2017/07/27)
A series of N-methoxyamide derivatives was identified and evaluated as GPR119 agonists. Several N-methoxyamides with thienopyrimidine and pyridine scaffolds showed potent GPR119 agonistic activities. Among them, compound 9c displayed good in vitro activity and potency. Moreover, compound 9c lowered glucose excursion in mice in an oral glucose tolerance test and increased GLP-1 secretion in intestinal cells.
Indole- and Pyrrole-BX: Bench-Stable Hypervalent Iodine Reagents for Heterocycle Umpolung
Caramenti, Paola,Nicolai, Stefano,Waser, Jerome
supporting information, p. 14702 - 14706 (2017/09/11)
The one-step synthesis of the bench-stable hypervalent iodine reagents IndoleBX and PyrroleBX using mild Lewis acid catalyzed conditions is reported. The new reagents are stable up to 150 °C and were applied in the C?H arylation of unactivated arenes using either rhodium or ruthenium catalysts. A broad range of heterocyclic systems of high interest for synthetic and medicinal chemistry was accessed in high yields. The developed C?H functionalization could not be achieved using reported reagents or methods, highlighting the unique reactivity of Indole- and Pyrrole-BX.
C-F bond cleavage enabled redox-neutral [4+1] annulation via C-H bond activation
Wang, Cheng-Qiang,Ye, Lu,Feng, Chao,Loh, Teck-Peng
supporting information, p. 1762 - 1765 (2017/02/15)
Using α,α-difluoromethylene alkyne as a nontraditional one-carbon reaction partner, a synthetically novel method for the construction of isoindolin-1-one derivatives via Rh(III)-catalyzed [4+1] annulation reaction is reported. The 2-fold C-F bond cleavage not only enables the generation of desired product under an overall oxidant-free condition but also results in a net migration of carbon-carbon triple bond. In addition, the present reaction protocol exhibits a tolerance of a wide spectrum of functional groups due to the mild reaction conditions employed.
Selective mono-alkylation of N-methoxybenzamides
Chen, Zenghua,Hu, Le'an,Zeng, Fanyun,Zhu, Ranran,Zheng, Shasha,Yu, Qingzhen,Huang, Jianhui
supporting information, p. 4258 - 4261 (2017/04/21)
We report our latest discovery of norbornene derivative modulated highly mono-selective ortho-C-H activation alkylation reactions on arenes bearing simple mono-dentate coordinating groups. The reaction features the use of readily available benzamides and alkyl halides. During the study, we prepared 30 mono-alkylated aryl amides in good yields with good mono-selectivity. We have also demonstrated that structurally rigid alkenes such as norbornene and its derivatives are a good class of ligand and could be used for future direct C-H functionalizations. The utilization of norbornene type ligands for assistance in C-H activation processes has opened a new window for future molecular design using direct C-H functionalization strategies.
Palladium-Catalyzed Deaminative Phenanthridinone Synthesis from Aniline via C-H Bond Activation
Yedage, Subhash L.,Bhanage, Bhalchandra M.
supporting information, p. 4103 - 4111 (2016/06/09)
This work reports palladium-catalyzed phenanthridinone synthesis using the coupling of aniline and amide by formation of C-C and C-N bonds in a one-pot fashion via dual C-H bond activation. It involves simultaneous cleavage of four bonds and the formation of two new bonds. The present protocol is ligand-free, takes place under mild reaction conditions, and is environmentally benign as nitrogen gas and water are the only side products. This transformation demonstrates a broad range of aniline and amide substrates with different functional groups and has been scaled up to gram level.
Ir(III)-Catalyzed Carbenoid Functionalization of Benzamides: Synthesis of N-Methoxyisoquinolinediones and N-Methoxyisoquinolinones
Phatake, Ravindra S.,Patel, Pitambar,Ramana, Chepuri V.
supporting information, p. 2828 - 2831 (2016/07/06)
A mild and efficient Ir(III)-catalyzed C-H carbenoid functionalization strategy has been developed to access N-methoxyisoquinolinediones and N-methoxyisoquinolinones. The reaction proceeds efficiently in high yield at room temperature over a broad range of substrates without requirement of any additional oxidants or a base.
Regiocontrolled Coupling of Aromatic and Vinylic Amides with α-Allenols to Form γ-Lactams via Rhodium(III)-Catalyzed C-H Activation
Zhou, Zhi,Liu, Guixia,Lu, Xiyan
supporting information, p. 5668 - 5671 (2016/11/17)
A mild, regiocontrolled coupling of aromatic and vinylic amides with α-allenols to form γ-lactams via rhodium(III)-catalyzed C-H activation has been demonstrated. This [4 + 1] annulation reaction provides an efficient method for the synthesis of isoindolinones and 1,5-dihydro-pyrrol-2-ones bearing a tetrasubstituted carbon atom α to the nitrogen atom with good functional group tolerance. The hydroxyl group in the allene substrate is essential in controlling the chemo- and regioselectivity of the reaction probably by coordination interaction with the rhodium catalyst.
