Preparation and Structures of 2-Substituted 5-Benzyl-3-methylimidazolidin-4-one-Derived Iminium Salts, Reactive Intermediates in Organocatalytic Transformations Involving<i>α</i>,<i>β</i>-Unsaturated Aldehydes
作者:Uroš Grošelj、Albert Beck、W. Bernd Schweizer、Dieter Seebach
DOI:10.1002/hlca.201400110
日期:2014.6
Preparations of the title compounds, 5–7 (Scheme 1 and Table 1), of their ammonium salts, 9–11 (Scheme 2 and Table 2), and of the corresponding cinnamaldehyde‐derived iminium salts 12–14 (Scheme 3 and Table 3) are reported. The X‐ray crystal structures of 15 cinnamyliminium PF6 salts have been determined (Table 4). Selected 1H‐NMR data (Table 5) of the ammonium and iminium salts are discussed, and
标题化合物的制剂,5 - 7(方案1和表1),它们的铵盐,9 - 11(方案2和表2),以及相应的肉桂醛衍生的亚铵盐的12 - 14(方案3和表3)被报告。已经确定了15种肉桂亚胺PF 6盐的X射线晶体结构(表4)。选定的1 H-NMR数据(表5讨论了铵盐和亚胺盐,并比较了溶液中的结构和固态结构。