From ( E )- and ( Z )-ketoximes to N -sulfenylimines, ketimines or ketones at will. Application to erythromycin derivatives
作者:Jorge Esteban、Anna M. Costa、Fèlix Urpı́、Jaume Vilarrasa
DOI:10.1016/j.tetlet.2004.06.002
日期:2004.7
disulfide (PhSSPh) have been compared to gain insight into the mechanisms involved and their potential applications. N-Sulfenylimine isomers and ketimines have been spectroscopically characterised. Both the E and Z isomers of erythromycin A oxime, when treated with Bu3P and PhSSPh (1:4:8 ratio), give the same N-phenylsulfenyl ketimine (of configuration E) as the major compound, whereas with Bu3P or
比较了(E)-和(Z)-酮肟与三烷基膦和二苯基二硫化物(PhSSPh)的反应,以深入了解所涉及的机理及其潜在应用。N-亚磺酰亚胺亚胺异构体和酮亚胺已经在光谱上表征。当用Bu 3 P和PhSSPh(1:4:8的比例)处理时,红霉素A肟的E和Z异构体均得到与主要化合物相同的N-苯基亚磺酰基酮亚胺(结构E),而用Bu 3 P或Me 3 P和PySeSePy(比例为1:8:4)可提供高产率的亚胺。克拉霉素肟的行为类似。