59507-30-1Relevant academic research and scientific papers
Systematic Study on the Catalytic Arsa-Wittig Reaction
Inaba, Ryoto,Kawashima, Ikuo,Fujii, Toshiki,Yumura, Takashi,Imoto, Hiroaki,Naka, Kensuke
, p. 13400 - 13407 (2020/09/21)
Efficient catalytic arsa-Wittig reactions have been developed by using 1-phenylarsolane as a catalyst. A wide array of aldehydes was converted to the corresponding olefins in high yields with moderate to excellent E stereoselectivity in the presence of a catalytic amount of 1-phenylarsolane. Moreover, density functional theory calculations were carried out to afford insight into the E/Z selectivity.
Dual Ligand-Enabled Nondirected C?H Olefination of Arenes
Chen, Hao,Wedi, Philipp,Meyer, Tim,Tavakoli, Ghazal,van Gemmeren, Manuel
supporting information, p. 2497 - 2501 (2018/02/06)
The application of the Pd-catalyzed oxidative C?H olefination of arenes, also known as the Fujiwara–Moritani reaction, has traditionally been limited by the requirement for directing groups on the substrate or the need to use the arene in large excess, ty
Identification of N-Hydroxycinnamamide analogues and their bio-evaluation against breast cancer cell lines
Shukla, Akhilesh Kumar,Hamidullah,Shrivash, Manoj Kumar,Tripathi, Vishwa Deepak,Konwar, Rituraj,Pandey, Jyoti
, p. 475 - 483 (2018/08/21)
The present study demonstrates the identification of N-hydroxycinnamamide derivatives and their anticancer potential against human triple-negative breast cancer cell line MDA-MB?231, MCF-7 and non-malignant origin cell line, HEK-293 (human embryonic kidney). MTT assay was studied with HEK-293 cell line. Anticancer potential of the N-hydroxycinnamamide derivatives were compared with marked drug Tamoxifen through in vitro study. The compound numbers 3b and 3h exhibit most potent activity against antagonistic breast cancer cells (MDA-MB-231) with IC50 13μM and 5μM respectively. Compound 3h promotes DNA fragmentation and induction of apoptosis. Furthermore, loss of mitochondrial membrane potential induced by compound 3h. The major mechanism of compound 3h for anti-breast cancer activity was probably initiation of reactive oxygen species (ROS) in cancer cells thereby persuading apoptotic cell deaths in cancer cells.
Polyethyleneimine-Supported Triphenylphosphine and Its Use as a Highly Loaded Bifunctional Polymeric Reagent in Chromatography-Free One-Pot Wittig Reactions
Xia, Xuanshu,Toy, Patrick H.
supporting information, p. 1737 - 1743 (2015/07/20)
A polyethyleneimine-supported triphenylphosphine reagent has been synthesized and used as a highly loaded bifunctional homogeneous reagent in a range of one-pot Wittig reactions that afforded high yields of the desired products after simple purification procedures. The approach also served efficiently in tandem reaction sequences involving a one-pot Wittig reaction followed by conjugate reduction of the newly formed alkene product in situ. In these transformations, the phosphine oxide groups generated in the Wittig reaction served as the catalyst for activating trichlorosilane in the subsequent reduction reaction.
SULFAMATE DERIVATIVE COMPOUND FOR USE IN PREVENTING OR TREATING EPILEPSY
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Page/Page column 28; 29, (2015/06/25)
The present invention relates to a pharmaceutical composition for treating or preventing epilepsy containing a sulfamate derivative compound and/or pharmaceutically acceptable salt thereof as an active ingredient. Furthermore, the present invention relates to a method for treatment or prevention epilepsy comprising administering a sulfamate derivative compound in a pharmaceutically effective amount to a subject in need of treatment or prevention of epilepsy.
PHENYLALKYL SULFAMATE COMPOUND AND MUSCLE RELAXANT COMPOSITION COMPRISING THE SAME
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Page/Page column 31-32, (2014/01/08)
The present invention relates to novel phenylalkyl sulfamate compounds, a method for preventing or treating a disease associated with muscle spasm. The present invention ensures the enhancement of muscle relaxation activity essential for alleviation of muscle spasm, such that it is promising for preventing or treating various diseases associated with muscle spasm.
A newly-designed PE-supported arsine for efficient and practical catalytic Wittig olefination
Wang, Peng,Liu, Chun-Rong,Sun, Xiu-Li,Chen, Shuai-Shuai,Li, Jun-Fang,Xie, Zuowei,Tang, Yong
supporting information; experimental part, p. 290 - 292 (2012/01/06)
A newly designed PE-supported arsine has been developed as an excellent catalyst for catalytic Wittig-type olefination. Simple ketones, in particular inactive ketones prove to be suitable substrates for the first time. This reaction provides an easy access to di-, tri-, and tetra-substituted olefins in high yield.
Organocatalytic decarboxylative Doebner-Knoevenagel reactions between arylaldehydes and monoethyl malonate mediated by a bifunctional polymeric catalyst
Lu, Jinni,Toy, Patrick H.
supporting information; experimental part, p. 1723 - 1726 (2011/09/12)
A bifunctional polystyrene bearing both DMAP and piperidine groups has been prepared and used as an organocatalyst for decarboxylative Doebner-Knoevenagel reactions of arylaldehydes and monoethyl malonate. Isolated yields of the resulting cinnamates were very high, and in all cases only the E-isomer was detected. When a polystyrene catalyst functionalized with only DMAP or piperidine groups was used in these reactions, catalysis was much less efficient. Furthermore, catalysis using a combination of the monofunctional polymers was also less efficient than with the bifunctional polystyrene. Thus, it appears that there is a synergistic effect obtained by co-locating the two different catalytic amine groups on the same polymer backbone. Georg Thieme Verlag Stuttgart · New York.
Chromatography-free wittig reactions using a bifunctional polymeric reagent
Leung, Peter Shu-Wai,Teng, Yan,Toy, Patrick H.
supporting information; experimental part, p. 4996 - 4999 (2010/12/25)
The first example of a polystyrene bearing two distinct reagent groups has been prepared. This phosphine and amine functionalized material was used in one-pot Wittig reactions with an aldehyde and either an α-halo-ester, -ketone, or -amide. Due to the heterogeneous nature of the polymer, the desired alkene product of these reactions could be isolated in excellent yield in essentially pure form after only filtration and solvent removal.
Ph3As-catalyzed Wittig-type olefination of aldehydes with diazoacetate in the presence of Na2S2O4
Cao, Peng,Li, Chuan-Ying,Kang, Yan-Biao,Xie, Zuowei,Sun, Xiu-Li,Tang, Yong
, p. 6628 - 6630 (2008/02/10)
(Chemical Equation Presented) In the presence of sodium hydrosulfite and a catalytic amount of AsPh3 and Fe(TCP)Cl, aldehydes react with ethyl diazoacetate to give the corresponding α,β-unsaturated esters in high yields with excellent stereoselectivities (E/Z > 50/1).
