Conformational isomerism in 1,2-di-o-tolylnaphthalenes: selective rotation of the 2-aryl ring
作者:Thian-Guan Peck、Yee-Hing Lai
DOI:10.1016/j.tet.2009.02.068
日期:2009.5
their conformational behavior that could involve rotation of either of the tolyl rings. The existence of anti and syn atropisomers was evident from their 1H NMR spectra at room temperature indicating two pairs of well-resolved singlets for the methyl protons. Dynamic 1H NMR studies estimated the rotation barrier to be about 76–82 kJ mol−1, a value consistent with selective rotation of the 2-tolyl ring
制备了1,2-二甲苯基萘的两种衍生物(X = Cl,CN)作为模型,以研究其构象行为可能涉及其中一个甲苯基环的旋转。的存在抗和顺式阻转异构体是从它们的明显1在室温下,指示两对甲基质子良好分辨单峰的1 H NMR光谱。动态1 H NMR研究估计旋转势垒约为76–82 kJ mol -1,该值与构象互变中2甲苯基环的选择性旋转一致。
Reactions of o-quinone monoimides with sulfoxides, diazoalkanes, and triphenylphosphine
作者:H. W. Heine、James R. Empfield、Thomas D. Golobish、Elizabeth A. Williams、Mary F. Garbauskus
DOI:10.1021/jo00356a014
日期:1986.3
Synthesis and reactions of N-(2,4-dichloro-6-oxo-2,4-cyclohexadien-1-ylidene)-4-nitrobenzamide with alkenes
作者:Harold W. Heine、Barbara J. Barchiesi、Elizabeth A. Williams
DOI:10.1021/jo00188a009
日期:1984.7
Experiments with Quinone Imides. II. A Novel Synthesis of 1,2-Diphenylnaphthalene
作者:Ahmed Mustafa、Mohamed Kamel
DOI:10.1021/ja01626a049
日期:1955.11
Irving; Gutmann, Journal of Biological Chemistry, 1959, vol. 234, p. 2878,2879