Conversion of a thiohydantoin to the corresponding hydantoin via a ring-opening/ring closure mechanism
作者:François Goubet、Georges Teutsch
DOI:10.1016/0040-4039(96)01735-2
日期:1996.10
activated N, N′ disubstituted arylthiohydantoins with methyl or ethyl iodide and sodium methoxide in DMF at room temperature affords the corresponding hydantoins in good yield. The mechanism involves an unusual ring opening-ring closure sequence which can be exploited for a novel (thio) hydantoin to (thio) urea rearrangement.
在室温下在DMF中用甲基或乙基碘化物和甲醇钠处理活化的N,N'二取代的芳基硫代乙内酰脲,以良好的收率得到相应的乙内酰脲。该机制涉及不寻常的开环-开环闭合序列,该序列可用于新的(硫代)乙内酰脲至(硫代)尿素重排。