Radical allylation of trifluoromethylated xanthates: use of DEAD for removing the allyltributyltin excess
摘要:
Radical allylation of trifluoromethylated xanthates allows the preparation of quaternary carbon centers bearing the trifluoromethyl group. An excess of the allyltributyltin reagent must be used in order to achieve satisfactory yields of the adducts. The excess of reagent could be conveniently removed by the use of diethylazodicarboxylate (DEAD). (C) 2001 Elsevier Science Ltd. All rights reserved.
Trifluoromethylation of Ketones and Aldehydes with Bu3SnCF3
摘要:
The (trifluoromethyl)stannane reagent, Bu3SnCF3, was found to react under CsF activation with ketones and aldehydes to the corresponding trifluoromethylated stannane ether intermediates at room temperature in high yield. Only a mildly acidic extraction (aqueous NH4Cl) is required to release the corresponding trifluoromethyl alcohol products. The protocol is compatible with acid-sensitive functional groups.
Convenient synthesis of fluorinated alkanes and cycloalkanes by hydrogenation of perfluoroalkylalkenes under ultrasound irradiation
作者:Y. Carcenac、M. Tordeux、C. Wakselman、P. Diter
DOI:10.1016/j.jfluchem.2005.07.006
日期:2005.10
Synthesis of several 1,4-disubstituted cyclohexanes, by hydrogenation of stericallyhindered and electron poor perfluoroalkyl alkenes, was performed, at room temperature under hydrogen at atmospheric pressure. Hydrogenation was difficult to achieve without ultrasound whatever catalyst and pressure (from 1 to 120 bar) used. Coupling of ultrasonic irradiation with metallic catalysis dramatically increased
Electrochemical trifluoromethylation of carbonyl compounds
作者:S. Sibille、S. Mcharek、J. Perichon
DOI:10.1016/0040-4020(89)80140-1
日期:1989.1
The electroreduction of CF3Br in DMF containing aldehydes or ketones, using a sacrificial zinc anode, affords the corresponding trifluoromethyl alcohols together with the unreactive organozinc species CF3ZnBr and (CF3)2Zn. The alcohols are obtained with good yields from aldehydes. With ketones the organozinc species are formed preferentially to the alcohols, but the addition of tetramethylethylene-diamine
METHOD OF TREATMENT USING SUBSTITUTED PYRAZOLO[1,5-A] PYRIMIDINE COMPOUNDS
申请人:Array BioPharma, Inc.
公开号:US20160228441A1
公开(公告)日:2016-08-11
Compounds useful in the synthesis of compounds for treating pain, cancer, inflammation, neurodegenerative disease or Typanosoma cruzi infection in a mammal.
用于合成用于治疗哺乳动物疼痛,癌症,炎症,神经退行性疾病或克鲁茨菌感染的化合物。
SIBILLE, S.;MCHAREK, S.;PERICHON, J., TETRAHEDRON, 45,(1989) N, C. 1423-1428
作者:SIBILLE, S.、MCHAREK, S.、PERICHON, J.
DOI:——
日期:——
AMINOPYRROLOTRIAZINES AS KINASE INHIBITORS
申请人:BRISTOL-MYERS SQUIBB COMPANY
公开号:US20200347071A1
公开(公告)日:2020-11-05
The disclosure relates to compounds of formula I which are useful as kinase modulators including RIPK 1 modulation. The disclosure also provides methods of making and using the compounds for example in treatments related to necrosis or inflammation as well as other indications.