Synthesis and Conformational Analysis of Saturated3,1,2-Benzoxazaphosphinine 2-Oxides
作者:Henri Kivelä、Zita Zalán、Petri Tähtinen、Reijo Sillanpää、Ferenc Fülöp、Kalevi Pihlaja
DOI:10.1002/ejoc.200400611
日期:2005.3
synthesize P-epimeric diastereomers of the corresponding unsubsituted and N-substituted 2-phenyl-, 2phenoxy- and 2-[bis(2-chloroethyl)amino]octahydro-2H3,1,2-benzoxazaphosphinine 2-oxides. The stereochemistry and conformations of the prepared compounds were analyzed mainly by variable-temperature 1 H, 13 C and 31 P NMR spectroscopy. Geometry optimizations were performed for some trans-fused molecules
N-未取代的 N-甲基和 N-苄基顺式和反式 2(羟甲基)环己胺与二氯苯膦、二氯磷酸苯和二(2-氯乙基)二氯磷酰胺进行闭环,以合成 P-差向异构非对映异构体相应的未取代和N-取代的2-苯基-、2-苯氧基-和2-[双(2-氯乙基)氨基]八氢-2H3,1,2-苯并恶氮膦2-氧化物。制备的化合物的立体化学和构象主要通过变温 1 H、 13 C 和 31 P NMR 光谱分析。通过利用 B3LYP DFT 方法和局部密集基组,对一些转融合分子进行几何优化,然后是 JH,P coup