Lithium 1,1'-binaphthyl-2,2'-dioxyaluminium hydride compounds of the general formula: ##STR1## wherein R.sup.1 represents a hydrogen atom, or a methyl or ethyl group, and R.sup.2 represents a straight- or branched-chain alkyl group containing from 1 to 12 carbon atoms unsubstituted or substituted by at least one fluorine atom, hydroxy group, or straight- or branched-chain alkoxy group containing from 1 to 4 carbon atoms, or represents a phenyl group unsubstituted or substituted by at least one straight- or branched-chain alkyl group containing from 1 to 4 carbon atoms are useful as reducing agents.
一般式为:##STR1## 其中R.sup.1代表氢原子,或甲基或乙基基团,R.sup.2代表含有1至12个碳原子的直链或支链烷基基团,未经取代或至少被至少一个
氟原子,羟基,或含有1至4个碳原子的直链或支链烷氧基团取代,或代表未经取代或至少被至少一个含有1至4个碳原子的直链或支链烷基基团取代的苯基团,可用作还原剂。