37622-89-2Relevant articles and documents
1,3-dipolar cycloaddition of ethyl diazoacetate to alkynes in the pores of zeolite NaY
Kobayashi, Keijiro,Igura, Yuta,Imachi, Shouhei,Masui, Yoichi,Onaka, Makoto
, p. 60 - 61 (2007)
Zeolite NaY promotes 1,3-dipolar cycloaddition of ethyl diazoacetate to alkynes having an electron-withdrawing group to afford the corresponding functionalized pyrazoles in high yields. The activation of the dipolarophile inside the pores of NaY is proposed based on the 13CMASNMR analysis. Copyright
SUBSTITUTED PYRAZOLE COMPOUNDS, COMPOSITIONS CONTAINING SAME, AND USE THEREOF
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Paragraph 0244-0245, (2022/01/12)
The present invention provides substituted pyrazole compounds, compositions containing same, and use thereof. The substituted pyrazole compounds comprise a compound represented by formula (I) or a tautomer, stereoisomer, prodrug, crystalline form, pharmaceutically acceptable salt, hydrate, or solvate thereof. The compound represented by formula (I) can serve as a tissue selective androgen receptor modulator (SARM), particularly serving as a drug for treating prostate cancer and other AR-dependent conditions and diseases in which AR antagonism is desired.
Metal-free C-C, C-O, C-S and C-N bond formation enabled by SBA-15 supported TFMSA
Yi, Xiangyan,Feng, Jiajun,Huang, Fei,Baell, Jonathan Bayldon
supporting information, p. 1243 - 1246 (2020/02/04)
The construction of intermolecular C-C, C-O, C-S and C-N bonds between diazo compounds and acyclic and cyclic 1,3-dicarbonyl compounds, thiophenol and alkynes was developed by using TFMSA@SBA-15, thus providing a metal-free and eco-friendly platform for f
Compound and process for synthesizing 5-acetyl-1H-pyrazole-3-carboxylic acid by using compound
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Paragraph 0016; 0046-0047, (2020/06/02)
The invention belongs to the field of chemical synthesis of substances and discloses a compound, application and a process for synthesizing 5-acetyl-1H-pyrazole-3-carboxylic acid by using the compound. A compound 2, 3-butanedione is used as a starting material to synthesize a compound intermediate III, the compound intermediate III is separated out from the system, the product conversion is promoted, the purification purpose can be achieved through filtration, the conversion rate reaches 95%, and the yield is increased; synthesis of an intermediate IV: by taking the intermediate III and a hydrazine compound as raw materials, the pH of the system is regulated, the yield is increased, and impurity production is reduced; after the reaction is ended, concentrating and filtering are carried out, so that the yield reaches 98%, and the HPLC purity is greater than 98.5%; and through the operation, high-purity V is obtained. The process of the invention is simple and safe, high in yield, suitable for industrialization, beneficial to impurity control and capable of reducing quality risks.
Synthetic method for one-step C-N construction C-S of C-C(I), (C) and (C)-(C) bonds (by machine translation)
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Paragraph 0036-0038; 0054-0065, (2019/11/28)
An acid load type catalyst is used under the heating C - C condition C - N, C - S and under the heating condition, the α - protonation of the heavy nitrogen ester is carried out, and the construction of the keys is realized in one step, and the method α -
Synthesis of 1,3-dioxo-substituted allenes via copper(I)-catalyzed coupling of α-oxo-alkynes and α-oxo-diazos by controlling the sequence of adding substrates
Liu, Chulong,Weng, Yunxiang,Zeng, Xiaobao,Zheng, Weiping,Wang, Xinyan,Hu, Yuefei
, p. 493 - 496 (2019/01/15)
A novel direct synthesis of 1,3-dioxo-substituted allenes was developed by copper(I)-catalyzed coupling of α-oxo-alkynes and α-oxo-diazos. It was a sequence of adding substrates-controlled method and the desired products were synthesized chemoselectively by adding α-oxo-alkyne terminally.
Synthesis of functionalized pyrazole derivatives by regioselective [3+2] cycloadditions of N-Boc-α-amino acid-derived ynones
Kirar, Eva Pu?avec,Gro?elj, Uro?,Golobi?, Amalija,Poagan, Franc,Ri?ko, Sebastijan,?tefane, Bogdan,Svete, Jurij
, p. 467 - 480 (2018/06/18)
[3+2] cycloadditions of ynones derived from glycine and (S)-alanine and some other dipolarophiles with azomethine imines, nitrile oxides, diazoacetate, and azidoacetate were studied. The dipolarophiles were obtained from α-amino acids, either by the reduc
PYRAZOLYL SUBSTITUTED TETRAHYDROPYRANYLSULFONES
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Paragraph 0294; 0295, (2017/05/14)
The invention relates to pyrazolyl substituted tetrahydropyranylsulfones as voltage gated calcium channel blockers, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
NOVEL COMPOUNDS AND PHARMACEUTICAL COMPOSITIONS THEREOF FOR THE TREATMENT OF CYSTIC FIBROSIS
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Paragraph 0707, (2015/02/25)
The present invention discloses compounds according to Formula I: wherein R1 is as defined herein. The present invention relates to compounds and their use in the treatment of cystic fibrosis, methods for their production, pharmaceutical compositions comprising the same, and methods of treatment cystic fibrosis by administering a compound of the invention.
THIENO[2,3-C]PYRANS AS CFTR MODULATORS
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Paragraph 00211, (2015/02/25)
The present invention discloses compounds according to Formula I: Wherein R is as defined herein. The present invention relates to compounds and their use in the treatment of cystic fibrosis, methods for their production, pharmaceutical compositions comprising the same, and methods of treatment cystic fibrosis by administering a compound of the invention.