作者:John Emsley、Neville J. Freeman、Michael B. Hursthouse、Paul A. Bates
DOI:10.1016/0022-2860(87)85073-1
日期:1987.10
Abstract The X-ray crystal structures of 1,3-diphenyl-2-methylpropane-1,3-dione and 1,3-diphenyl-2-(4-methoxyphenyl)propane-1,3-dione show them both to adopt cis -diketo (Z,Z) conformations with carbonyl—carbonyl dihedral angles of 89.0(3)° (2-methyl derivative), and 85.5(4)° and 77.7(4)° for the two molecules in the asymmetric unit of the 2-(4-methoxyphenyl) derivative. These are the first acyclic
摘要 1,3-二苯基-2-甲基丙烷-1,3-二酮和1,3-二苯基-2-(4-甲氧基苯基)丙烷-1,3-二酮的X射线晶体结构表明它们均采用顺式-二酮(Z,Z)构象,羰基-羰基二面角为 89.0(3)°(2-甲基衍生物),2 的不对称单元中的两个分子为 85.5(4)° 和 77.7(4)° -(4-甲氧基苯基)衍生物。这些是第一个报道的带有 α-氢的无环 β-二酮,它们在固态下没有烯醇构型。