- Hydroboration reduction reaction of aromatic nitro compounds without transition metal catalysis
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The invention relates to a hydroboration reduction reaction of aromatic nitro compounds without transition metal catalysis. According to the method, triethyl boron and potassium tert-butoxide are used as catalysts for the first time, and an aromatic nitro compound and pinacol borane which is low in price and easy to obtain can be conveniently catalyzed to be subjected to a hydroboration reduction reaction under mild conditions to prepare aromatic amine products. Compared with a traditional method, the method generally has the advantages that the catalyst is cheap and easy to obtain, operation is convenient, and reaction is safe. The selective hydroboration reduction reaction of the non-transition metal reagent catalyzed aromatic nitro compound and pinacol borane is realized for the first time, and a practical new reaction strategy is provided for laboratory preparation or industrial production of aromatic amine products.
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Paragraph 0006; 0073-0076
(2021/07/31)
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- Selective Methylation of Amides, N-Heterocycles, Thiols, and Alcohols with Tetramethylammonium Fluoride
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We herein disclose the use of tetramethylammonium fluoride (TMAF) as a direct and selective methylating agent of a variety of amides, indoles, pyrroles, imidazoles, alcohols, and thiols. The method is characterized by operational simplicity, wide scope, and ease of purification. Our computational studies suggest a concerted methylation-deprotonation as the preferred reaction pathway.
- Cheng, Hong-Gang,Pu, Maoping,Kundu, Gourab,Schoenebeck, Franziska
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supporting information
p. 331 - 334
(2019/12/30)
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- Silver-mediated trifluoromethylation of aryldiazonium salts: Conversion of amino group into trifluoromethyl group
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A novel strategy for aromatic trifluoromethylation by converting aromatic amino group into CF3 group is reported herein. This method, which can be considered as trifluoromethylation variation of the classic Sandmeyer reaction, uses readily available aromatic amines as starting materials and is performed under mild conditions.
- Wang, Xi,Xu, Yan,Mo, Fanyang,Ji, Guojing,Qiu, Di,Feng, Jiajie,Ye, Yuxuan,Zhang, Songnan,Zhang, Yan,Wang, Jianbo
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supporting information
p. 10330 - 10333
(2013/08/23)
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- Substituted Isoquinolinones and Quinazolinones
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The invention relates to substituted nitrogen containing bicyclic heterocycles of the formula (I) wherein Z is CH2 or N—R4 and X, R1, R2, R4, R6, R7 and n are as defined in the description. Such compounds are suitable for the treatment of a disorder or disease which is mediated by the activity of MDM2 and/or MDM4, or variants thereof.
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Page/Page column 100
(2011/10/10)
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- AMIDE COMPOUND
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There is provided a FAAH inhibitor and a prophylactic or therapeutic agent for cerebrovascular disorders or sleep disorders comprising it. The prophylactic or therapeutic agent comprises a compound of the formula (I0): wherein Z is oxygen or sulfur; R1 is aryl which may be substituted, or a heterocyclic group which may be substituted; R1a is a hydrogen atom, a hydrocarbon group which may be substituted, hydroxyl, etc.; R2 is piperidin-1,4-diyl which may be substituted, or piperazin-1,4-diyl which may be substituted; R3 is a group formed by eliminating two hydrogen atoms from a 5-membered aromatic heterocyclic group having 1 to 3 heteroatoms selected from nitrogen, oxygen and sulfur, which may be further substituted, -CO-, etc.; and R4 is a hydrocarbon group which may be substituted, or a heterocyclic group which may be substituted; or a salt thereof.
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Page/Page column 91
(2008/06/13)
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- HETEROCYCLICALLY SUBSTITUTED INDOLINONES, THEIR PRODUCTION AND USE AS MEDICAMENTS
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The invention relates to heterocyclically substituted indolinones of general formula (I), in which R1 to R5 and X are defined as cited in claim 1, to their tautomers, diastereomers, enantiomers and to their mixtures, prodrugs and salts, in particular their physiologically compatible salts. Said compounds exhibit valuable pharmacological characteristics, in particular an inhibiting action on various receptor tyrosine kinases and cyclin-CDK complexes and on the proliferation of endothelial cells and various tumour cells. The invention also relates to medicaments containing said compounds, to the use of the latter and to a method for producing the same.
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Page/Page column 97
(2008/06/13)
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- Amide conformational switching induced by protonation of aromatic substituent
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(Matrix presented) Introduction of an electron-withdrawing group on the aromatic ring of N-methylacetanilide decreased the ratio of the cis conformer, and the ratio correlates well with the Hammett σ values of the substituents. These steric properties can be applied to achieve amide conformational swiching by protonation at the aromatic substituent of 4-[bis(dimethylamino)]-N-methylacetanilide or N-[p-(dimethylamino)phenyl]-N-phenylacetamide.
- Yamasaki, Ryu,Tanatani, Aya,Azumaya, Isao,Saito, Shoichi,Yamaguchi, Kentaro,Kagechika, Hiroyuki
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p. 1265 - 1267
(2007/10/03)
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