Enantioselective cyanoformylation of aldehydes mediated by BINOLAM–AlCl as a monometallic bifunctional catalyst
作者:Jesús Casas、Alejandro Baeza、José M. Sansano、Carmen Nájera、José M. Saá
DOI:10.1016/s0957-4166(02)00824-8
日期:2003.1
BINOLAM–AlCl's, binaphthoxide aluminium chloride species generated in situ from either (R)- or (S)-3,3′-bis(diethylaminomethyl)-2,2′-dihydroxy-1,1′-binaphthalene (BINOLAM) behave as Lewis acid–Lewis base (LA-LB) catalysts in the enantioselective addition of methyl cyanoformate to aldehydes at room temperature, thereby leading to the asymmetric synthesis of (S)- or (R)-O-methoxycarbonyl cyanohydrins
由(R)-或(S)-3,3'-双(二乙基氨基甲基)-2,2'-二羟基-1,1'-双萘(BINOLAM)原位生成的BINOLAM-AlCl's,双萘酚铝氯化物的行为与路易斯酸-路易斯碱(LA-LB)催化剂,在室温下将氰基甲酸酯甲基对映体选择性地加成醛,从而分别导致(S)-或(R)-O-甲氧基羰基氰醇的不对称合成。