Synthesis and 1H and 13C NMR spectral study of some r(2),c(4)-bis(isopropylcarbonyl)-c(5)-hydroxy-t(5)-methyl-t(3)-substituted phenyl, cyclohexanones and their oximes
作者:R. Balachander、S.A. Sameera、R.T. Sabapathy Mohan
DOI:10.1016/j.molstruc.2016.02.086
日期:2016.7
compounds have been characterized by 1 H, 13 C, 2D NMR and mass spectral studies. The spectral data suggest that compounds 2 , 3 , 5 and 6 exist in chair conformation with axial orientation of the hydroxyl group and equatorial orientations of all the other substituent. Long-range coupling is observed between OH proton to H–6a proton should be in a W arrangement. Compounds 1 and 4 diamagnetic anisotropic effect
摘要 所有合成的化合物均已通过 1 H、 13 C、 2D NMR 和质谱研究进行表征。光谱数据表明,化合物 2、3、5 和 6 以椅子构象存在,羟基为轴向取向,所有其他取代基均呈赤道取向。观察到 OH 质子与 H-6a 质子之间的长程耦合应该是 W 排列。化合物 1 和 4 的呋喃基抗磁各向异性效应不明显,并且不存在 OH 质子与 H-6a 质子之间的长程耦合。使用 1 H 和 13 C 化学位移讨论了对所有合成化合物的肟化效应。