ISSN:
1572-8838
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Electrical Engineering, Measurement and Control Technology
Notes:
Abstract The two-step electrochemical synthesis of chalcogeno derivatives ArEPh (1) and ArEEAr (3) resulting from the oxidation of ArE− (2) (AR = 4 − NCC6H4, 1-naphthyl, 2-quinolyl; E = S, Se, Te) can be conveniently carried out in MeCN, by reduction of an aryl halide (ArX) in the presence of electrogenerated PhE− or E2 2− anions (SRN1 substitution reaction). To circumvent the disadvantages connected with the use of a divided cell equipped with degradable membranes, a method based on a beaker-type cell has been developed. Thus, the synthesis of substituted compounds1 and3 can be carried out in an undivided cell equipped with a magnesium anode, if a fluoride salt, such as Et4NF.2H2O is purposely added before electrolysis (for3) or after the first step (for1). Under such conditions, the yields are competitive with those obtained in a divided cell.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00625585
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