Several new chiral rhodium(II) catalysts have been synthesised for evaluation as catalysts in asymmetric oxonium ylide-[2,3] sigmatropic rearrangement of diazocarbonyl substrates; a catalyst derived from (S)-tert-leucine afforded a chiral benzofuranone derivative with an ee of 60 %.
已经合成了几种新的手性
铑(II)催化剂,作为重氮羰基底物的不对称氧代内鎓盐-[2,3]σ重排的催化剂进行评估。衍生自(S)-叔亮
氨酸的催化剂提供了ee为60%的手性
苯并呋喃酮衍
生物。