differences (Δδs) in the two diastereomers of menthyl esters of known chiral derivatizing agents (CDAs) were compared to those of the α-methoxy-α-trifluoromethyl-1-naphthylacetyl (MTN(1)A) analogues I. Discrimination of the terminal diastereotopic methyl resonances in esters of the homologous, symmetrical carbinols II was evaluated. Remarkably, the methyls differed in the MTN(1)A esters III even when
将已知手性衍生剂 (
CDA) 的薄荷酯的两种非对映异构体的
化学位移差异 (Δδs) 的相对大小与 α-甲氧基-α-三
氟甲基-1-
萘基乙酰基 (
MTN (1) A)的
化学位移差异 (Δδs) 的相对大小进行比较类似物我。对同源、对称
甲醇II 的酯中末端非对映甲基共振的辨别进行了评估。值得注意的是,即使在n = 15时,
MTN (1) A 酯III 中的甲基也不同;还观察到 Δδ 值符号的意外交叉。