range of enantiomerically pure 4-substituted 5-amino-1,3dioxanes has been condensed with 2-(2-bromoethyl)benzaldehyde to produce chiral dihydroisoquinolinium salts, which are effective asymmetric catalysts for the epoxidation of simple alkenes, giving ees of up to 71 %. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006).
一系列对映体纯的 4-取代 5-
氨基-1,3
二氧六环已与 2-(2-
溴乙基)
苯甲醛缩合以产生手性二
氢异喹啉盐,这是用于简单
烯烃环
氧化的有效不对称
催化剂,可得到高达71%。((c) Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)。