| http://www.w3.org/ns/prov#value | - Compounds of formula I can be prepared by reaction of amine III with a compound of general formula XCH2 R (IV, wherein R has the above defined meaning and X is a halogen atom, such as chlorine or bromine) in the presence of a proton scavenger base, such as triethylamine or pyridine, in a suitable solvent, such as carbon tetrachloride, dichloromethane or chloroform.
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