An optically active functional compound represented by the following formula (1) is disclosed: ##STR1## wherein R denotes an alkyl group having 1-14 carbon atoms; -X- denotes ##STR2## denotes a single bond, ##STR3## n=0, 1 or 2; and C* denotes an asymmetric carbon atom. The compound of the formula (1) may be produced through an optically active compound of the following formula (2) or (3): ##STR4## The compounds of the above formulas (1)-(3) are all characterized by a trifluoromethyl group providing a large spontaneous polarization attached to an asymmetric carbon atom.
以下公式(1)所表示的具有光学活性的功能化合物已被披露:##STR1##
其中,R表示具有1-14个碳原子的烷基基团;-X-表示##STR2##表示单键,##STR3##n=0,1或2;C*表示不对称碳原子。公式(1)的化合物可以通过以下公式(2)或(3)的光学活性化合物制备:##STR4##
以上公式(1)-(3)的化合物都具有三
氟甲基基团,该基团与不对称碳原子相连,提供了大的自发极化。