58472-44-9Relevant academic research and scientific papers
Access to α-Cyano Carbonyls Bearing a Quaternary Carbon Center by Reductive Cyanation
Ren, Xinyi,Shen, Chaoren,Wang, Guangzhu,Shi, Zhanglin,Tian, Xinxin,Dong, Kaiwu
supporting information, p. 2527 - 2532 (2021/05/05)
Reductive cyanation of tertiary alkyl bromides using electrophilic cyanating reagent and zinc reductant was developed, providing various α-cyano ketones, esters, and carboxamides containing a nitrile-bearing all-carbon quaternary center in good to excellent yields under mild reaction conditions. The corresponding reaction mechanism involving in situ generated organozinc reagent and reactivity distinction was elucidated by density functional theory computation.
5-Aryl-2-(3,5-dialkyl-4-hydroxyphenyl)-4,4-dimethyl- 4H-imidazole 3-oxides and their redox species: How antioxidant activity of 1-hydroxy-2,5-dihydro- 1h-imidazoles correlates with the stability of hybrid phenoxyl-nitroxides
Amitina, Svetlana A.,Artamonov, Ilya A.,Dmitrieva, Natalya A.,Kandalintseva, Natalya V.,Lomanovich, Alyona V.,Markov, Alexander F.,Mazhukin, Dmitrii G.,Ten, Yury A.,Zaytseva, Elena V.
, (2020/08/24)
Cyclic nitrones of the imidazole series, containing a sterically hindered phenol group, are promising objects for studying antioxidant activity; on the other hand, they can form persistent hybrid phenoxyl-nitroxyl radicals (HPNs) upon oxidation. Here, a series of 5-aryl-4,4-dimethyl- 4H-imidazole 3-oxides was obtained by condensation of aromatic 2-hydroxylaminoketones with 4-formyl-2,6-dialkylphenols followed by oxidation of the initially formed N-hydroxy derivatives. It was shown that the antioxidant activity of both 1-hydroxy-2,5-dihydroimidazoles and 4H-imidazole 3-oxides increases with a decrease in steric volume of the alkyl substituent in the phenol group, while the stability of the corresponding HPNs generated from 4H-imidazole 3-oxides reveals the opposite tendency.
A α - (4 - substituted phenyl) of isobutyric acid preparation method
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Paragraph 0065, (2017/08/26)
The invention relates to the field of organic chemical synthesis and discloses a preparation method of alpha-(4-substituted phenyl)isobutyric acid. The method comprises the steps of respectively carrying out Friedel-Crafts acylation, condensation reaction, rearrangement reaction and hydrolytic acidification reaction on single substituted benzene and 2-haloisobutyryl halide or isobutyryl halide serving as an acylating agent to finally prepare a finished product of alpha-(4-substituted phenyl)isobutyric acid. The preparation method provided by the invention has the advantages that the raw materials are easily obtained and are relatively low in toxicity, a catalysis system of the rearrangement reaction can effectively promote the rearrangement reaction, the obtained product is relatively high in purity and yield, the whole preparation method is simple, the adopted reagent is safe, and the preparation method is beneficial to industrial production.
Building Congested Ketone: Substituted Hantzsch Ester and Nitrile as Alkylation Reagents in Photoredox Catalysis
Chen, Wenxin,Liu, Zheng,Tian, Jiaqi,Li, Jin,Ma, Jing,Cheng, Xu,Li, Guigen
supporting information, p. 12312 - 12315 (2016/10/07)
For the first time, 4-alkyl Hantzsch esters were used to construct molecules with all-carbon quaternary centers by visible light-induced photoredox catalysis via transfer alkylation. Up to a 1500 h-1 turnover frequency was achieved in this reaction. Reactions of 4-alkyl Hantzsch nitriles as tertiary radical donors joined two contiguous all-carbon quaternary centers intermolecularly, and this chemistry was used to synthesize a common precursor of a class of hydroxysteroid dehydrogenase inhibitors.
New compound, the compound of the formula, newcompound and radiation-sensitive composition containing a thermosetting film
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Paragraph 0108; 0109; 0110, (2016/12/16)
PROBLEM TO BE SOLVED: To provide a novel compound having low sublimability and exhibiting high radiation sensitivity on use as a photopolymerization initiator, a method for producing the novel compound, and a radiation-sensitive composition including the
Discovery of 6-phenylpyrimido[4,5- B ][1,4]oxazines as potent and selective Acyl CoA: Diacylglycerol acyltransferase 1 (DGAT1) inhibitors with in vivo efficacy in rodents
Fox, Brian M.,Sugimoto, Kazuyuki,Iio, Kiyosei,Yoshida, Atsuhito,Zhang, Jian,Li, Kexue,Hao, Xiaolin,Labelle, Marc,Smith, Marie-Louise,Rubenstein, Steven M.,Ye, Guosen,McMinn, Dustin,Jackson, Simon,Choi, Rebekah,Shan, Bei,Ma, Ji,Miao, Shichang,Matsui, Takuya,Ogawa, Nobuya,Suzuki, Masahiro,Kobayashi, Akio,Ozeki, Hidekazu,Okuma, Chihiro,Ishii, Yukihito,Tomimoto, Daisuke,Furakawa, Noboru,Tanaka, Masahiro,Matsushita, Mutsuyoshi,Takahashi, Mitsuru,Inaba, Takashi,Sagawa, Shoichi,Kayser, Frank
, p. 3464 - 3483 (2014/05/20)
The discovery and optimization of a series of acyl CoA:diacylglycerol acyltransferase 1 (DGAT1) inhibitors based on a pyrimido[4,5-b][1,4]oxazine scaffold is described. The SAR of a moderately potent HTS hit was investigated resulting in the discovery of phenylcyclohexylacetic acid 1, which displayed good DGAT1 inhibitory activity, selectivity, and PK properties. During preclinical toxicity studies a metabolite of 1 was observed that was responsible for elevating the levels of liver enzymes ALT and AST. Subsequently, analogues were synthesized to preclude the formation of the toxic metabolite. This effort resulted in the discovery of spiroindane 42, which displayed significantly improved DGAT1 inhibition compared to 1. Spiroindane 42 was well tolerated in rodents in vivo, demonstrated efficacy in an oral triglyceride uptake study in mice, and had an acceptable safety profile in preclinical toxicity studies.
NOVEL PHOTOINITIATORS AND THEIR APPLICATIONS
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Page/Page column 18-19, (2010/11/24)
Photoinitiators of formula (Ia) or (Ib) having chain transfer groups, wherein n is 1 or 2; PI is for example a group of formula (IIa); PI' inter alia is a group of formula (IIIa); Ar is for example phenyl; Ar2 is inter alia phenylene; R1 and R2 are for ex
Facile Synthesis of 2-Alkoxy-2-aryloxiranes
Kimpe, Norbert De,Buyck, Laurent De,Verhe, Roland,Schamp, Niceas
, p. 3631 - 3636 (2007/10/02)
Tertiary α-bromoalkyl aryl ketones 1 were converted into 2-alkoxy-2-aryloxiranes 4 exclusively by reaction with excess potassium carbonate in the corresponding dry alcohol.Silver carbonate in a dry alcohol with these α-bromo ketones yielded competitively formation of 2-alkoxyoxiranes and semi-benzilic Favorskii rearrangement (-> 5), while silver hexafluoroantimonate in the same medium afforded the latter rearrangement reaction exclusively.
Indenylidene-3-acetic acid process for preparing indene acetic acids
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, (2008/06/13)
Process for preparing 5-fluoro-2-methyl-1-(p-methylsulfinylbenzylidene)-indene-3-acetic acid by reacting fluorobenzene with an acid halide, to form an indanone, reaction of the indanone with a methylthio (or methylsulfinyl)benzyl compound to form 5-fluoro-2-methyl-1-(p-methylthiobenzyl) or (p-methylsulfinylbenzyl)-indene and reacting said indene with a glyoxylic acid. The invention also relates to intermediates thereof and processes for said intermediates.
