Treatment of 2-tosyloxycyclopentanone with substituted furans in the presence of a chiral amino alcohol catalyst and K2HPO4 results in the formation of (4 + 3) cycloaddition products with enantioselectivities that exceed 90% in certain cases.
在某些情况下,在手性
氨基醇催化剂和K 2 HPO 4存在下,用取代的
呋喃处理2-
甲苯磺酰氧基
环戊酮会导致形成(4 + 3)对映选择性超过90%的环加成产物。