申请人:TAKASAGO INTERNATIONAL CORPORATION
公开号:US20150329452A1
公开(公告)日:2015-11-19
A method for producing an optically active isopulegol includes asymmetrically isomerizing a specific compound in the presence of a ruthenium catalyst and a base, thereby giving an optically active citronellal, and selectively cyclizing the optically active citronellal in the presence of an aluminum catalyst. The aluminum catalyst is obtained by reacting a specific hydroxy compound and at least one aluminum compound selected from a specific alkylaluminum compound, a specific hydride aluminum compound, a specific linear aluminoxane and a specific cyclic aluminoxane.
一种制备光学活性异莪醇的方法包括在钌催化剂和碱的存在下不对称异构化特定化合物,从而得到光学活性柠檬醛,并在铝催化剂的存在下选择性地环化光学活性柠檬醛。铝催化剂通过将特定的羟基化合物和至少一种铝化合物(从特定的烷基铝化合物、特定的氢化铝化合物、特定的线性铝氧烷和特定的环状铝氧烷中选择)反应而得到。