57234-28-3Relevant articles and documents
Regioselectivity Influences in Platinum-Catalyzed Intramolecular Alkyne O-H and N-H Additions
Costello, Jeff P.,Ferreira, Eric M.
supporting information, p. 9934 - 9939 (2019/12/24)
The steric and electronic drivers of regioselectivity in platinum-catalyzed intramolecular hydroalkoxylation are elucidated. A branch point is found that divides the process between 5-exo and 6-endo selective processes, and enol ethers can be accessed in good yields for both oxygen heterocycles. The main influence arises from an electronic effect, where the alkyne substituent induces a polarization of the alkyne that leads to preferential heteroatom attack at the more electron-deficient carbon. The electronic effects are studied in other contexts, including hydroacyloxylation and hydroamination, and similar trends in directionality are predominant although not uniformly observed.
Synthesis of axially chiral compounds using diastereomeric resolution of racemic-boronic acids
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Paragraph 0317-0320, (2017/10/05)
The present invention refers to a portion of the preferred embodiment tax [mik [mik] - biphenyl boronic acid compounds that prevent an axial chirality stereochemical isomerism quality pipe acid; axial chiral biphenyl boronic acid intermediates in synthesizing method number bath using a novel method and axial chiral compound are disclosed. (by machine translation)
Synthesis of axially chiral compounds using diastereomeric resolution of racemic-boronic acids
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Paragraph 0317; 0318-0321, (2017/10/26)
The present invention refers to a portion of the preferred embodiment tax [mik[mik] - biphenyl boronic acid compounds that prevent an axial chirality stereochemical isomerism quality pipe acid; axial chiral biphenyl boronic acid intermediates in synthesizing method number bath using a novel method and axial chiral compound are disclosed. (by machine translation)
Synthesis of Optically Pure 3,3′-Disubstituted-1,1′-Bi-6-Methoxy-2-Phenol (BIPhOL) Derivatives via Diastereomeric Resolution
Yoon, Jung-Min,Lee, Chun-Young,Jo, Young-In,Cheon, Cheol-Hong
, p. 8464 - 8469 (2016/09/28)
A new protocol for the enantioselective synthesis of 3,3′-disubstituted-1,1′-bi-6-methoxy-2-phenol (BIPhOL) derivatives is described. Diastereomeric resolution of racemic BIPhOL boronic acid using a boronic acid moiety as a resolving group generated two diastereomers and subsequent Suzuki-Miyaura coupling reaction of the resulting diastereomers with aryl halides provided BIPhOL derivatives without any loss of enantioselectivity. In addition, the absolute stereochemistry of chiral BIPhOL was determined by comparison of the optical rotation with the reported value.
NOVEL COMPOUNDS
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Paragraph 0204; 0205, (2014/11/11)
The invention provides compounds of formula (I): Said compounds being modulators of Kv3 channels and of use in the prophylaxis or treatment of related disorders.
HYDANTOIN DERIVATIVES USEFUL AS KV3 INHIBITORS
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Page/Page column 26, (2013/06/27)
The invention provides compounds of formula (I): Said compounds being modulators of Kv3 channels and of use in the prophylaxis or treatment of related disorders.
HYDANTOIN DERIVATIVES USEFUL AS KV3 INHIBITORS
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Paragraph 0614-0615, (2013/10/22)
The invention provides compounds of formula (I): Said compounds being inhibitors of Kv3 channels and of use in the prophylaxis or treatment of related disorders.
Palladium-catalyzed asymmetric synthesis of silicon-stereogenic dibenzosiloles via enantioselective C-H bond functionalization
Shintani, Ryo,Otomo, Haruka,Ota, Kensuke,Hayashi, Tamio
supporting information; experimental part, p. 7305 - 7308 (2012/06/16)
A Pd-catalyzed asymmetric synthesis of Si-stereogenic dibenzosiloles is developed through enantioselective C-H bond functionalization of prochiral 2-(arylsilyl)aryl triflates. High chemo- and enantioselectivities are achieved by employing a Josiphos-type ligand under mild conditions.
HYDANTOIN DERIVATIVES USEFUL AS KV3 INHIBITORS
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Page/Page column 81-82, (2012/06/30)
The invention provides compounds of formula (I): Said compounds being inhibitors of Kv3 channels and of use in the prophylaxis or treatment of related disorders.
NOVEL BENZOXATHIIN DERIVATIVE
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Page/Page column 76, (2008/12/06)
Disclosed is a compound represented by the formula (I) below and a pharmaceutically acceptable salt thereof. This compound is useful for treatment of obesity, diabetes and the like. [In the formula (I), Ar represents a benzene ring or the like; X1 represents a nitrogen atom, a sulfur atom or the like; R1 represents an aryl group or the like; X2 represents a group represented by the following formula (II): (wherein R4 and R5 respectively represent a lower alkyl group or the like, and m represents a number of 2-4) or the like; one of X and Y represents an oxygen atom and the other represents a sulfanyl group or the like; and X3-X6 respectively represent -CH-, a nitrogen atom or the like.