- Gold(I)-catalyzed iodination of arenes
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A wide variety of electron-rich arenes were efficiently converted into the corresponding iodinated compounds via a gold(I)-catalyzed reaction under mild conditions. Georg Thieme Verlag Stuttgart. New York.
- Leboeuf, David,Ciesielski, Jennifer,Frontier, Alison J.
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supporting information
p. 399 - 402
(2014/03/21)
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- Electrophilic aromatic thallation of phenol ethers: an improved experimental procedure
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In this report we present a simple modification of the classical electrophilic aromatic thallation reaction, in which iodination of several phenol ethers can be achieved in high yields under very mild reaction conditions with the mixture TTFA/BF3.Et2O/ClCH2CH2Cl, whereby both oxidative dimerizations and hydrolysis have been succesfully suppressed. - Keywords: Thallium; Electrophilic thallation; Electron-rich arenes; Aryl; Phenol
- Santos, M. L. dos,Magalhaes, G. C. de,Filho, R. Braz
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- Assay for serum cholinesterase
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Cholinesterase activity is determined by means of the choline obtained by the action of cholinesterase on a compound of the formula: wherein R and R1 can be the same or different, and can be alkyl, such as methyl, ethyl, propyl, butyl, isopropyl, and so forth; alkoxy, such as methoxy, ethoxy, propoxy, butoxy, and so forth; amino (-NR2R3), wherein R2 and R3 can be the same or different, and can be hydrogen, methyl, ethyl, or propyl, wherein X is an anion, such as halogen (chloro, bromo, or iodo) methyl, sulfate, nitrate and acetate;, The method of the invention ensures a conveniently low rate of cholinesterase catalyzed hydrolysis and a high degree of accuracy. Certain compounds of formula (I) defined above are novel compounds which are claimed per se.
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