The present invention provides a method for making compound (1) by reacting compound (2) with phosphine oxide (3) in the presence of a transition metal/phosphine complex and optionally reducing the reaction product: ##STR1## where n represents 0 or 1; the double line having a continuous line and a dotted line represents a double bond or a single bond such that the ring having the double line forms a naphthalene ring or an octahydronaphthalene ring with an adjacent benzene ring; Tf represents a trifluoromethanesulfonyl group; and Ar represents a phenyl group, a substituted phenyl group or a naphthyl group. The present invention provides an economical way to produce compound (1) as a ligand of a complex useful as a catalyst for a variety of asymmetric synthesis reactions.
本发明提供了一种制备化合物(1)的方法,通过在过渡
金属/膦配合物存在下,将化合物(2)与膦氧化物(3)反应,并可选择性地还原反应产物:其中n代表0或1;具有连续线和虚线的双线代表双键或单键,使具有双线的环形成一个
萘环或与相邻苯环形成一个八氢
萘环;Tf代表三
氟甲磺酰基;Ar代表苯基,取代苯基或
萘基。本发明提供了一种经济的方法,用作多种不对称合成反应的催化剂的复合物的
配体,以生产化合物(1)。