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由于Ｈ８－ＢＩＮＯＬ（５）分子结构的特殊性，其作为不对称反应催化剂的手性配体经常表现出较ＢＩＮＯＬ（４）更好的不对称诱导性能［１］。５的合成通常由４催化氢化制得。最近Ｍ．Ｔａｓｈｉｒｏ报道了用ＲａｎｅｙＮｉ－Ａ１合金在稀碱水溶液中与氯代联苯的脱氯反应，并
Due to the particularity of the molecular structure of H8-BINOL (5), chiral ligands as asymmetric reaction catalysts often exhibit better asymmetric induction properties than BINOL (4) [1]. The synthesis of 5 is usually made by 4 catalytic hydrogenation. Recently Tashiro reported the dechlorination reaction of a Raney Ni-Al alloy with chlorinated biphenyls in dilute aqueous alkali and