treating these mixture with anhydrousaluminumchloride at 150 /sR 160 °C during /sR 48 hrs in order to convert the latter into the easy-separable perfluoro(2,5,5- trichloro-2-alkyloxolane)s. Small quantities of new perfluoro(5,5-dichloroalkanoyl chloride)s were also among the chlorination products. The spectroscopic data as well as the physical properties of these new fluorination products, and perfluoro(2
将5种2-烷基取代的氧烷(如2-乙基氧烷,2-正丙基氧烷,2-异丙基氧烷,2-正丁基氧烷和2-正戊基氧烷)进行电化学氟化,得到相应的全氟(2-烷基氧烷) s。从这些起始原料与异构全氟(2-烷基氧戊烷),全氟(2-烷基-5-甲基氧杂戊烷)和全氟(二烷基醚)一起以高收率获得全氟(2-烷基恶烷)。在/ sR于150 / sR 160°C下用无水氯化铝处理这些混合物后,通过回收未反应的前者,成功地纯化了含有少量异构全氟(2-烷基氧戊烷)异构体的全氟(2-烷基氧烷)。为了将后者转化为易分离的全氟(2,5,5-三氯-2-烷基氧戊烷),需要48小时。少量新的全氟化合物(5,5-二氯链烷酰氯也属于氯化产物。介绍了这些新型氟化产物,全氟(2,5,5-三氯-2-烷基氧戊烷)和全氟(5,5-二氯链烷酰氯)的光谱数据以及物理性质。
Catalytic synthesis of oxygenate from alcohol
申请人:Yuan Ze University
公开号:US07314960B1
公开(公告)日:2008-01-01
The present invention discloses a method for catalytic synthesis of oxygenate from alcohol. At first, a feeding material comprising at least one alcohol is provided. Next, a copper-containing catalyst is provided and the catalyst further comprises at least one metal element selected from the group consisting of the following: zinc, magnesium, and aluminum elements. Following that, a catalytic reaction of the feeding material over the copper-containing catalyst is carried out to synthesize at least one oxygenate.
Piperidine and Azetidine Formation by Direct Cyclization of Diols with N-Nonsubstituted Sulfonamide under the Mitsunobu Conditions Utilizing (Cyanomethylene)tributylphosphorane (CMBP) and Its Application to the Synthesis of Lupinine
our studies on the Mitsunobu chemistry, diethylazodicarboxylate (DEAD)-PPh3 and our new azodicarboxamide reagents, e.g., N,N,N’,N’-tetramethylazodicarboxamide (TMAD)-PBu3 could not promote alkylation of N-nonsubstituted sulfonamides such as TsNH2, because the amide reacted with PPh3 or PBu3 to form triphenylor tributylphosphine tosylimide (TsN=PR3) under the reaction conditions. Furthermore, the same
Direct anomeric substitution of pyranyl esters using organocopper reagents
作者:V. Bolitt、C. Mioskowski、J.R. Falck
DOI:10.1016/s0040-4039(01)93845-6
日期:1989.1
2-Substituted tetrahydropyrans were obtained by direct anomeric substitution of tetrahydropyranyl 2,4-dimethoxybenzoate, using Grignard-derived organocopperreagents.
The subject invention relates to novel P2X
3
receptor antagonists that play a critical role in treating disease states associated with pain, in particular peripheral pain, inflammatory pain, or tissue injury pain that can be treated using a P2X
3
receptor subunit modulator.