| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | dimethyl 2-[(cyclohexylimino)(3-methyl-4-oxo-5,5-di-p-tolyl-2-thioxoimidazolidin-1-yl)methyl]but-2-enedioate | 1292836-44-2 | C31H35N3O5S | 561.702 |
The zwitterionic 1:1 intermediates generated by addition of alkyl isocyanides to acetylenic esters are trapped by 3-methyl-5,5-diaryl-2-thioxoimidazolidin-4-ones to yield dialkyl 2-[(alkylimino)(3-methyl-4-oxo-5,5-diaryl-2-thioxoimidazolidin-1-yl)methyl]but-2-enedioates in good yields.