Synthesis of (η 6 -arene)tricarbonylchromium derivatives of 1,4-dihydro-3,1-benzoxazines

A series of (η 6 -arene)tricarbonylchromium derivatives of 1,4-dihydro-3,1-benzoxazines was synthesized and characterized. The compounds were obtained by two alternative methods, namely, by the reaction of triammine(tricarbonyl)chromium with 1,4-dihydro-3,1-benzoxazines (method A ) and by the condensation of (η 6 -2-aminobenzyl alcohol)tricarbonylchromium with various aldehydes and ketones (method B ). The composition and structure of obtained compounds were established by different physicochemical methods of analysis, such as HPLC, UV, IR, 1 H NMR spectroscopy, mass spectrometry, and X-ray diffraction.