Reaction at a Nitrogen Atom

Diorgano tellurium derivatives containing a nitrophenyl group were reduced to the corresponding aminophenyl derivatives by sodium borohydride in good yield and by hydrazine in very poor yield d. 

The amino group in 2-aminophenyl ethyl tellurium was acylated by various acid chlorides in a dichloromethane medium at 0 with triethylamine serving as hydrogen chloride scavenger.  

A -Acetyl-2-aminophenyl Ethyl Tellurium 5.0 g (20 mmol) of 2-aminophenyl ethyl tellurium are dissolved in 20 ml of dichloromethane and 5 ml of triethylamine are added. The mixture is cooled to 0° and 2.0 g of acetyl chloride dissolved in 10 mi of dichloromethane are added dropwise to the stirred amine solution. Stirring is continued for 2 h, the mixture is then evaporated, and the residue is recrystallized yield 3.7 g (63%) m.p. 81°. (Physical data and yields for the other compounds were not reported), 

N-Formyl-2-aminophenyl ethyl tellurium was prepared using the formic acid-dicyclohexyl-carbodiimide method . 

Irgolic Organo Tellurium Compounds wilh 2 Te —C Bonds or 1 Te = C Bond 

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