58028-74-3Relevant academic research and scientific papers
HPLC-ECD and TDDFT-ECD study of hexahydropyrrolo[1,2-a]quinoline derivatives
Tóth, László,Mándi, Attila,Váradi, Dániel,Kovács, Tibor,Szabados, Anna,Kiss-Szikszai, Attila,Gong, Qi,Zhang, Haiyan,Mátyus, Péter,Antus, Sándor,Kurtán, Tibor
, p. 866 - 874 (2018)
Synthesis of racemic hexahydropyrrolo[1,2-a]quinoline derivatives (1-8) was performed by utilizing the Knoevenagel-[1,5]-hydride shift-cyclization domino reaction. Separation of the enantiomers of the chiral products (1-8) was carried out by chiral high-p
Well-controlled ring-opening polymerization of cyclic esters catalyzed by aluminum amido complexes: Kinetics and mechanism
Liu, Junpeng,Ma, Haiyan
, p. 3096 - 3106 (2014)
A series of aluminum dimethyl complexes 1-6 bearing N-[2-(pyrrolidinyl)benzyl]anilido ligands were synthesized and well characterized. The molecular structure of complex 1 determined by an X-ray diffraction study indicates the bidentate chelating mode of
Double Capture of Difluorocarbene by 2-Aminostyrenes Enables the Construction of 3-(2,2-Difluoroethyl)-2-fluoroindoles
Sheng, Heyun,Su, Jianke,Li, Xin,Li, Xue,Song, Qiuling
supporting information, p. 7781 - 7786 (2021/10/25)
We report herein an efficient strategy to construct 3-(2,2-difluoroethyl)-2-fluoroindoles from activated o-aminostyrenes with ethyl bromodi-fluoroacetate as a difluorocarbene source. Through double capture of a difluorocarbene, two different types of fluo
Hexafluoroisopropanol-Mediated Redox-Neutral α-C(sp3)-H Functionalization of Cyclic Amines via Hydride Transfer
Shen, Yao-Bin,Wang, Lin-Xuan,Sun, Yun-Ming,Dong, Feng-Ying,Yu, Liping,Liu, Qing,Xiao, Jian
, p. 1915 - 1926 (2020/02/04)
Hexafluoroisopropanol has been demonstrated as the versatile promoter for redox-neutral α-C(sp3)-H functionalization of cyclic amines via the cascade [1,5]-hydride transfer/cyclization strategy. A wide range of cyclic amines are functionalized
Development of TsDPEN based imine-containing ligands for the copper-catalysed asymmetric Kinugasa reaction
Deng, Ping,He, Feilong,He, Huakang,Wu, Yue,Xu, Chuanlong,Yang, Yuchen,Zhou, Hui
, p. 18107 - 18114 (2020/06/08)
A novel class of chiralN,N,Nimine-containing ligands derived from TsDPEN (N-(p-tosyl)-1,2-diphenylethylene-1,2-diamine) has been developed and applied to the copper-catalyzed asymmetric Kinugasa reaction. The copper(ii) salt proved to be an efficient catalyst precursor, and it provides an efficient way to synthesize enantioenrichedcis-β-lactam. The pathway is air-tolerant and easily manipulated, and the ligands are easy to synthesize. A working model is proposed in which the stereocontrolling step is the [2 + 2] cycloaddition between ketene and imine to explain the observed stereoselectivities.
Catalyst-free photodecarbonylation ofortho-amino benzaldehyde
Li, Lamei,Wang, Songping,Wei, Wentao,Yan, Ming,Zhou, Jingwei
supporting information, p. 3421 - 3426 (2020/06/25)
It is almost a consensus that decarbonylation of the aldehyde group (-CHO) needs to not only be mediated by transition metal catalysts, but also requires severe reaction conditions (high temperature and long reaction time). In this work, inspired by the “conformational-selectivity-based” design strategy, we broke this consensus and discovered a catalyst-free photodecarbonylation of the aldehyde group. It revealed that decarbonylation can be easily achieved with visible light irradiation by introducing a tertiary amine into theortho-position of the aldehyde group. A diverse array of tertiary amines is tolerated by our photodecarbonylation under mild conditions. Furthermore, the (QM) computations of the mechanism and the experiments on well-designed special substrates revealed that our photodecarbonylation depends on the conformational specificity of the aldehyde group and tertiary amine, and occurs through an unusual [1,4]-H shift and a subsequent [1,3]-H shift.
4-(2-(pyrrolidine/piperidine-1-yl)benzyl)-piperazine urea TRPV1 antagonist and preparation method and application thereof
-
Paragraph 0059-0062, (2020/08/06)
The invention discloses a novel 4-(2-(pyrrolidine/piperidine-1-yl)benzyl)-piperazine urea type TRPV1 antagonist and a preparation method and application thereof. The invention relates to a compound ina general formula (I) and a pharmaceutically acceptable
Redox-Neutral Cascade Dearomatization of Indoles via Hydride Transfer: Divergent Synthesis of Tetrahydroquinoline-Fused Spiroindolenines
Shen, Yao-Bin,Li, Long-Fei,Xiao, Ming-Yan,Yang, Jian-Ming,Liu, Qing,Xiao, Jian
, p. 13935 - 13947 (2019/11/11)
The redox-neutral cascade dearomatization of indoles with o-aminobenzaldehydes has been realized via the hydride transfer strategy, achieving the condition- A nd substrate-controlled divergent synthesis of tetrahydroquinoline-fused spiroindolenines. The integration of hydride transfer-involved C(sp3)-H functionalization with dearomatization provides a promising platform for the construction of structurally diverse molecules.
N-Alkylation-Initiated Redox-Neutral [5 + 2] Annulation of 3-Alkylindoles with o-Aminobenzaldehydes: Access to Indole-1,2-Fused 1,4-Benzodiazepines
Wang, Shuai,Shen, Yao-Bin,Li, Long-Fei,Qiu, Bin,Yu, Liping,Liu, Qing,Xiao, Jian
supporting information, p. 8904 - 8908 (2019/11/19)
Described herein is an unprecedented N-Alkylation-initiated redox-neutral [5 + 2] annulation of 3-Alkylindoles with o-Aminobenzaldehydes via a cascade N-Alkylation/dehydration/[1,5]-hydride transfer/Friedel-Crafts alkylation sequence. A series of indole-1,2-fused 1,4-benzodiazepines are facilely constructed in moderate to good yields in one step. This protocol features excellent regioselectivity, metal-free conditions, high step economy, and wide substrate scope.
Spirocyclic Tetramates by Sequential Knoevenagel and [1,5]-Prototropic Shift
Josa-Culleré, Laia,Hirst, Michael G.,Lockett, Jonathan P.,Thompson, Amber L.,Moloney, Mark G.
, p. 9671 - 9683 (2019/09/06)
Highly functionalized spirocyclic tetramates were prepared via a sequential Knoevenagel reaction and [1,5]-prototropic shift (T-reaction) of bicyclic tetramates. While these compounds isomerize in solution, stable analogues can be prepared via an appropri
