154243-34-2Relevant academic research and scientific papers
Phosphine-Catalyzed [3 + 2] Annulation of Morita-Baylis-Hillman Carbonates with Isoxazole-Based Alkenes
Liao, Jianning,Dong, Jipan,Xu, Jiaqing,Wang, Wei,Wu, Yongjun,Hou, Yuxia,Guo, Hongchao
supporting information, p. 2090 - 2099 (2021/02/05)
A phosphine-catalyzed [3 + 2] annulation of Morita-Baylis-Hillman (MBH) carbonates with 3-methyl-4-nitro-5-styrylisoxazoles has been developed to afford various multifunctional isoxazoles in moderate to good yields with moderate to excellent diastereoselectivities. With a spirocyclic chiral phosphine as the catalyst, up to 89% ee was obtained.
Enantioselective dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita-Baylis-Hillman carbonates
Yang, Xin-He,Li, Jian-Ping,Wang, Dong-Chao,Xie, Ming-Sheng,Qu, Gui-Rong,Guo, Hai-Ming
supporting information, p. 9144 - 9147 (2019/08/07)
The phosphine-catalyzed asymmetric dearomative [3+2] cycloaddition of 2-nitrobenzofurans with aldehyde-derived Morita-Baylis-Hillman (MBH) carbonates or allenoate was developed. The reaction with MBH carbonates resulted in a series of cyclopentabenzofurans containing three contiguous stereocenters with good to high yields, diastereoselectivities and enantioselectivities. The use of allenoate also gave the target product with moderate enantioselectivity.
Effective and diastereoselective preparation of dispiro[cyclopent-3′-ene]bisoxindoles: Via novel [3 + 2] annulation of isoindigos and MBH carbonates
Ren, Hong-Xia,Peng, Lin,Song, Xiang-Jia,Liao, Li-Guo,Zou, Ying,Tian, Fang,Wang, Li-Xin
supporting information, p. 1297 - 1304 (2018/03/06)
A novel and diastereoselective [3 + 2] annulation of isoindigos and Morita-Baylis-Hillman carbonates has been developed for the highly efficient and one-step preparation of highly steric dispiro[cyclopent-3′-ene]bisoxindoles with two all-carbon quaternary
On the tandem Morita-Baylis-Hillman/transesterification processes. Mechanistic insights for the role of protic solvents
Carpanez, Arthur G.,Coelho, Fernando,Amarante, Giovanni W.
, p. 83 - 91 (2017/10/24)
Despite the remarkable rate acceleration under protic solvents such as alcohols and water, the use of acrylates as activated alkenes places a problem due to the possibility of ester hydrolysis or transesterification. Therefore, the tandem transesterification/Morita-Baylis-Hillman (MBH) reactions were investigated by ESI(+)-MS/(MS) and 1H NMR techniques. For the first time, the MBH back-reaction was fully examined by ESI(+)-MS/(MS) using labelling reagents revealed the complex equilibrium involving the Michael-type addition step of DABCO to acrylate. C- and O-protonation were observed at this stage, showing the transesterification process occurs previous to the aldol step, which is the rate-determining step of the mechanism. At this stage, a short-lived tetrahedral intermediate might be involved and should be considered in these processes.
Design, synthesis and evaluation of 3-arylidene azetidin-2-ones as potential antifungal agents against Alternaria solani Sorauer
Delong, Wang,Yongling, Wu,Lanying, Wang,Juntao, Feng,Xing, Zhang
, p. 6661 - 6673 (2017/11/17)
A new concise and facile method was explored to synthesize a collection of new 3-arylidene azetidin-2-ones, which could be regarded as the derivatives of the hybrid scaffold of bioactive natural cinnamamide and heterocycle azetidi-2-one. The structures of
Synthesis of Chiral α-Trifluoromethylamines with 2,2,2-Trifluoroethylamine as a "building Block"
Li, Xiaoyuan,Su, Jinhuan,Liu, Zhourujun,Zhu, Yuanyuan,Dong, Zhenghao,Qiu, Shuai,Wang, Jiayi,Lin, Li,Shen, Zhiqiang,Yan, Wenjin,Wang, Kairong,Wang, Rui
supporting information, p. 956 - 959 (2016/03/15)
The β-isocupreidine, a cinchonine derived alkaloid, catalyzed asymmetric SN2′-SN2′ reaction between N-2,2,2-trifluoroethylisatin ketimines and MBH type carbonates was realized in a simple and efficient way. A series of chiral α-trifl
Screening for covalent inhibitors using DNA-display of small molecule libraries functionalized with cysteine reactive moieties
Zambaldo,Daguer,Saarbach,Barluenga,Winssinger
supporting information, p. 1340 - 1351 (2016/07/21)
DNA-encoded chemical libraries are increasingly used to identify leads for drug discovery or chemical biology. Despite the resurging interest in covalent inhibitors, libraries are typically designed with synthon filtered out for reactive functionalities that can engage a target through covalent interactions. Herein, we report the synthesis of two libraries containing Michael acceptors to identify cysteine reactive ligands. We developed a simple procedure to discriminate between covalent and high affinity non-covalent inhibitors using DNA display of the library in a microarray format. The methodology was validated with known covalent and high affinity non-covalent kinase inhibitors. Screening of the library revealed novel covalent inhibitors for MEK2 and ERBB2.
N-bromosuccinimide-mediated radical cyclization of 3-arylallyl azides: Synthesis of 3-substituted quinolines
Wang, Wei-Xia,Zhang, Qing-Zhao,Zhang, Tian-Qi,Li, Zhan-Shan,Zhang, Wei,Yu, Wei
supporting information, p. 221 - 226 (2015/02/19)
Visible light irradiation of N-bromosuccinimide serves as an effective means to convert methyl 2-(azidomethyl)-3-arylpropenoates and 2-(azidomethyl)-3-arylacrylonitriles to the corresponding iminyl radicals via ?±-hydrogen abstraction and subsequent extrusion of dinitrogen. Thus formed iminyl radicals then undergo intramolecular ortho attack on the aryl ring, affording methyl quin-oline-3-carboxylates and quinoline-3-carbonitriles respectively.
Synthesis, characterization and antimicrobial activity of some new Baylis-Hillman derived benzothiazolo pyrimidinone derivatives
Gampa, Raghavachary,Chebrolu, Lavanya Devi,Jarapula, Ravi,Vaidya, Jayathirtha Rao,Ghanakota, Venkateshwar Rao,Manda, Sarangapani
, p. 217 - 227 (2015/03/04)
A series of Baylis-Hillman derived 22 new benzothiazolo pyrimidinone derivatives have been synthesized from Baylis-Hillman acetates and 2-amino benzothiazole under neat conditions with high yields. All the newly synthesized compounds have been characteriz
