Arenediazonium o-benzenedisulfonimides can be used as new and efficient reagents for Heck-type arylation reactions of some common substrates containing C–C multiple bonds, namely ethyl acrylate, acrylic acid, acroleyne, styrene and cyclopentene. The reactions were carried out in an organic solvent, in the presence of Pd(OAc)2 as pre-catalyst, and gave rise to arylated products, for example, ethyl cinnamates
Nickel-catalyzed Heck reaction of cycloalkenes using aryl sulfonates and pivalates
作者:Jianrong Steve Zhou、Xiaolei Huang、Shenghan Teng、Yonggui Robin Chi
DOI:10.1039/d1cc00634g
日期:——
Nickel-catalyzed Heck reaction of cycloalkenes delivers unusual conjugated arylated isomers. Nickel(0) catalysts ligated by chelating dialkylphosphines effectively activate not only aryl triflates as electrophiles, but also less reactive aryl mesylates, tosylates and pivalates. The omission of bases allows nickel hydride species to exist long enough to perform in situ olefin isomerization of initial
Synthesis and pharmacological activity of 6-aryl-2-azabicyclo[4.2.1]nonanes
作者:Paul H. Mazzocchiu、Chong Ho Kim
DOI:10.1021/jm00354a016
日期:1982.12
A series of 6-phenyl-, 6-(m-methoxyphenyl)-, and 6-(m-hydroxyphenyl)-2-azabicyclo[4.2.1]nonanes was synthesized by a sequence involving alkylation of an appropriate 2-arylcyclopentanone with an aminoalkyl substituent. Subsequent ring closure at the other alpha position on the cyclopentanone ring and Wolff-Kishner reduction afforded the title compound. Several derivatives of these materials showed activity
Cycloaliphatic compounds, analgesic compositions thereof and method of
申请人:Glaxo Group Limited
公开号:US04291059A1
公开(公告)日:1981-09-22
Compounds are disclosed of general formula (I) ##STR1## in which R.sub.1 represents a hydrogen atom, a halogen atom or a group OR.sub.2, in which R.sub.2 represents a hydrogen atom, an alkyl group or an acyl group, R.sub.3 represents hydrogen or an alkyl, alkenyl or aryl group, R.sub.4 and R.sub.5 which may be the same or different, each represents a hydrogen atom or an alkyl, alkenyl or alkynyl group optionally substituted by an aryl or cycloalkyl group; or R.sub.4 and R.sub.5 together with the nitrogen atom may form a saturated four to seven membered ring, with the provisos that, when R.sub.4 and R.sub.5 simultaneously represent hydrogen atoms then (i) when R.sub.1 is hydrogen then R.sub.3 is not methyl and (ii) the compounds are the .beta.-isomers; and their physiologically acceptable salts. Compounds of formula (I) may be prepared from the corresponding .alpha.- or .beta.-configuration alcohols, from an aziridine intermediate or by a variety of alkylation procedures whereby the group R.sub.4 and/or R.sub.5 is introduced. The compounds (I) and their salts have analgesic activity and may be formulated as pharmaceutical compositions in conventional manner.
Trifluoroacetylalkyl-substituted phenyl, phenol and benzoyl compounds and related methods of treatment
申请人:SOLVAY PHARMACEUTICALS GMBH
公开号:US20040214901A1
公开(公告)日:2004-10-28
Novel and known trifluoroacetyl-substituted phenyl, phenol and benzoyl compounds for the treatment and/or inhibition of obesity and of concomitant and/or secondary diseases involved therewith, in particular metabolic syndrome and cardiovascular diseases. Novel trifluoroacetyl-substituted phenyl, phenol and benzoyl compounds, pharmaceutical preparations containing them and processes for the preparation of these compounds. Also compounds acting as inhibitors of lipase, in particular pancreatic lipase.