Synthesis and crystal structure of 7-(diethylamino)-2-ethoxy-3-(4-nitrophenyl)- 2H-benzo[e] [1,2]oxaphosphinin 2-oxide

1Kulai, IV
2Mallet-Ladeira, S
1Kovtunenko, VA
1Voitenko, ZV
1Taras Shevchenko National University of Kyiv
2University of Toulouse, France
Dopov. Nac. akad. nauk Ukr. 2015, 12:83-89
Section: Chemistry
Language: Ukrainian

A new member of 3-aryl phosphacoumarins has been synthesized by the Knoevenagel condensation of 4-(diethylamino)salicylaldehyde and diethyl 4-nitrobenzylphosphonate and the further cyclization. The title compound was fully characterized by NMR spectroscopy, high-resolution massspectrometry, and single crystal X-ray diffraction. Comparison of the molecular structures of synthesized phosphacoumarin and analogous coumarin is made by basing on the obtained data. Main structure features of the benzo[e] [1,2]oxaphosphinin fragment were analyzed in terms of the phosphorus influence.

Keywords: organophosphorus, oxaphosphinin, phosphacoumarin, X-ray structure
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