Conclusions
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1.
The general criteria for the structure analysis of the heteroorganic derivatives of alkanenitronic acids by the13C NMR method were established.
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2.
The pyridine complexes of the boric esters of nitronic acids exist as the trans isomers.
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3.
The 1,3 (O, O)-transfer of the B(C2H5)2·C5H5N fragment in (CH3O2C)CH=N(O)OBEt2· C5H5N was observed, as well as the 1,5 (O, O)-transfer of the Si(CH3)3 group in C(NO2)2 =N(O)OSiMe3, and it was found that the two NO2 groups in C(CH3)(NO2)=N(O)OSi(CH3)3 are nonequivalent.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 1162–1165, May, (1978).
We express our gratitude to N. F. Karpenko and V. I. Kadentsev for taking the mass spectra.
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Ioffe, S.L., Kalinin, A.V., Khasapov, B.N. et al. Use of13C NMR,\(J_{13_C 15_N }\) and\(J_{1_H 15_N }\) data in structure and configuration analysis of heteroorganic derivatives of alkanenitronic acids. Russ Chem Bull 27, 1009–1012 (1978). https://doi.org/10.1007/BF00929013
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DOI: https://doi.org/10.1007/BF00929013