Dihydroxy naphthalenes have been applied in Betti-type solventless condensation between aldehydes and (S)-phenylethylamine as a chiral auxiliary. A series of chiral 1,3-aminonaphthols has been synthesized and isolated in diastereoisomerically pure form. The absolute configurations of the aminonaphthols synthesized have been determined by means of advanced NMR experiments and confirmed by X-ray crystallography
二羟基
萘已用于醛与(S)-苯
乙胺之间的Betti型无溶剂缩合,作为手性助剂。已经合成和分离了一系列非对映异构纯形式的手性1,3-
氨基
萘。合成的
氨基
萘的绝对构型已通过高级NMR实验确定,并通过X射线晶体学证实。新的手性
氨基
萘已被测试为将
二乙基锌和炔基
锌试剂加到醛中的对映体,其对映选择性高达98%ee。