61560-95-0Relevant academic research and scientific papers
Photoredox Catalysis Enables Decarboxylative Cyclization with Hypervalent Iodine(III) Reagents: Access to 2,5-Disubstituted 1,3,4-Oxadiazoles
Li, Jian,Lu, Xue-Chen,Xu, Yue,Wen, Jin-Xia,Hou, Guo-Quan,Liu, Li
supporting information, p. 9621 - 9626 (2020/12/21)
A novel approach to 2,5-disubstituted 1,3,4-oxadiazoles derivatives via a decarboxylative cyclization reaction by photoredox catalysis between commercially available α-oxocarboxylic acids and hypervalent iodine(III) reagent is described. This powerful transformation involves the coupling reaction between two different kinds of radical species and the formation of C-N and C-O bonds.
Reductive carboxylation of aromatic esters by electron transfer from magnesium metal
Maekawa, Hirofumi,Okawara, Hikaru,Murakami, Taro
supporting information, p. 206 - 209 (2016/12/28)
Magnesium-promoted reductive carboxylation of ethyl benzoate in the presence of chlorotrimethylsilane in N,N-dimethylformamide brought about a new carbon-carbon bond formation between the carbonyl carbon atom and carbon dioxide to give the corresponding benzoylformic acid in good yield. It is noteworthy that only ethyl benzoates with substituents at the meta-position were converted into benzoylformic acid derivatives. Moreover, no mandelic acid was detected even under the reductive conditions. This result indicates that benzoylformic acid was obtained after hydrolysis of a carboxylated intermediate, which would be alive as a stabilized structure in the reaction media.
Cationic Ir/Me-BIPAM-catalyzed asymmetric intramolecular direct hydroarylation of α-ketoamides
Shirai, Tomohiko,Ito, Hajime,Yamamoto, Yasunori
, p. 2658 - 2661 (2014/03/21)
Asymmetric intramolecular direct hydroarylation of α-ketoamides gives various types of optically active 3-substituted 3-hydroxy-2-oxindoles in high yields with complete regioselectivity and high enantioselectivities (84-98 % ee). This is realized by the use of the cationic iridium complex [Ir(cod) 2](BArF4) and the chiral O-linked bidentate phosphoramidite (R,R)-Me-BIPAM. Carbon's got a brand new bond: Asymmetric intramolecular direct hydroarylation of α-ketoamides gives various optically active 3-substituted 3-hydroxy-2-oxindoles in high yields with complete regioselectivity and high enantioselectivities. This is realized by the use of an asymmetric cationic iridium complex formed in situ (see Scheme).
Nickel-catalyzed decarboxylative acylation of heteroarenes by sp 2 C-H functionalization
Yang, Ke,Zhang, Cheng,Wang, Peng,Zhang, Yan,Ge, Haibo
supporting information, p. 7241 - 7244 (2014/06/23)
Nickel-catalyzed ligand-free decarboxylative cross-coupling of azole derivatives with α-oxoglyoxylic acids has been developed. This work represents the first example of decarboxylative cross-coupling reactions, in a C-H bond functionalization manner, thro
Palladium-catalyzed decarboxylative coupling of α-oxocarboxylic acids with C(sp2)-H of 2-aryloxypyridines
Yao, Jinzhong,Feng, Ruokun,Wu, Zaihong,Liu, Zhanxiang,Zhang, Yuhong
supporting information, p. 1517 - 1522 (2013/06/27)
An efficient palladium-catalyzed decarboxylative ortho-acylation of 2-aryloxypyridines with α-oxocarboxylic acids is described. In this new transformation, the aromatic C(sp2)-H bond was successfully acylated to give diverse aromatic ketones regioselectively in moderate to good yields. The pyridine group can be removed easily after the acylation to give the corresponding 2-hydroxy aromatic ketones. Copyright
NON-STEROIDAL PROGESTERONE RECEPTOR MODULATORS
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Page/Page column 73, (2009/04/24)
The present invention relates to non-steroidal progesterone receptor modulators of the general formula 1, the use of the progesterone receptor modulators for the manufacture of medicaments, and pharmaceutical compositions which comprise these compounds. The compounds according to the invention are suitable for the therapy and prophylaxis of gynaecological disorders such as endometriosis, leiomyomas of the uterus, dysfunctional bleeding and dysmenorrhoea, and for the therapy and prophylaxis of hormone-dependent tumours and for use for female fertility control and for hormone replacement therapy.
The synthesis and structure-activity relationships of 1,3-diaryl 1,2,4-(4H)-triazol-5-ones: A new class of calcium-dependent, large conductance, potassium (maxi-K) channel openers targeted for urge urinary incontinence
Hewawasam, Piyasena,Erway, Matthew,Thalody, George,Weiner, Harvey,Boissard, Christopher G.,Gribkoff, Valentin K.,Meanwell, Nicholas A.,Lodge, Nicholas,Starrett, Jr, John E.
, p. 1117 - 1120 (2007/10/03)
A series of 1,3-diaryl 1,2,4-(4H)-triazol-5-ones was prepared and shown by electrophysiological analysis to activate a cloned maxi-K channel mSlo (or hSlo) expressed in Xenopus laevis oocytes. The effects of these structurally novel maxi-K channel openers on bladder contractile function were studied in vitro using isolated rat bladder strips pre-contracted with carbachol. Several 1,3-diaryl 1,2,4-(4H)-triazol-5-one derivatives were found to be potent smooth muscle relaxants but this activity did not completely correlate with maxi-K channel opening.
6-Beta-(alpha-etherified oxymino)-acyl amino penicillins
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, (2008/06/13)
Compounds of formula (I): wherein R1 is optionally substituted phenyl and R is a cycloalkyl group having an alkyl substituent in the 1-position; or R1 is phenyl substituted by at least one fluorine atom and/or at least one trifluoromethyl group and R is hydrogen or an organic radical, and their salts and esters, are useful in the treatment of bacterial infections in humans and animals.
