Reaction of diethylboron chloride with salts of primary nitroalkanes and some functionally substituted nitro compounds

1. The diethylboric esters of the corresponding nitronic acids, with a tetracoordinated boron atom, are formed when diethylboron chloride is reacted with either the Na or K salts of primary nitroalkanes,α-phenylnitroethane, and nitroparaffins that contain ester or amide functionsα to the NO2 group. 2. In the diethylboric esters of the carbomethoxymethane- and carbomethoxyethanenitronic acids the boron atom is coordinated at the oxygen of the carbonyl group. 3. Rapid (on the NMR scale) intramolecular transfer of the diethylboric fragment from one carbo-methoxyl group to the other takes place in the diethylboric ester of bis(carbomethoxy)methanenitronic acid. 4. In the diethylboric esters of the carbamidomethane- and carbamidoethanenitronic acids the boron atom is coordinated at the nitrogen of the amide group.