Synthesis of new η6-(arene) chromium tricarbonyl complexes of isoxazolidines by 1,3-dipolar cycloaddition
作者:A. N. Artemov、E. V. Sazonova、E. A. Mavrina、N. Yu. Zarovkina
DOI:10.1007/s11172-012-0290-4
日期:2012.11
nitrones to η6-(styrene) chromium tricarbonyl and η6-(ethyl cynnamate) chromium tricarbonyl were synthesized and characterized by HPLC, IR, 1H NMR spectroscopy, and mass spectrometry. The resulted isoxazolidines were produced with a full regioselectivity and high stereoselectivity reached 100% in most cases.
合成了C,N-二取代硝酮和不同原位制备的单-N-取代硝酮的1,3-偶极环加成产物为η6-(苯乙烯)三羰基铬和η6-(肉桂酸乙酯)三羰基铬,并用HPLC表征, IR、1H NMR 光谱和质谱。所得异恶唑烷的制备具有完全的区域选择性,并且在大多数情况下达到 100% 的高立体选择性。