申请人:Secretary of State for Defence
in Her Britannic Majesty's Gov.
of the United Kingdom of
Great Britain and Northern Ireland
公开号:EP0117631A1
公开(公告)日:1984-09-05
A fluorinated compound having a formula:
wherein:
R, is hydrogen or alkyl having up to 12 carbon atoms;
R2 is selected from hydrogen, alkyl having up to 12 carbon atoms, alkoxy having up to 12 carbon atoms,
wherein R3 is hydrogen or alkyl having up to 12 carbon atoms, and wherein R4 is hydrogen, alkyl having up to 12 carbon atoms or alkoxy having up to 12 carbon atoms;
represents a cyclohexane ring which is in the trans configuration if 1,4-disubstituted;
represents a benzene ring; each of X, Y and Zindependently represents hydrogen or fluorine in one or more of the lateral benzene ring positions, provided that at least one of X, Y and Z is present representing fluorine; n = 0 or 1 provided that when
is
and R, is alkyl; with the proviso that in Formula l when n is 1 and
where R is n-alkyl and R2 is n-alkyl or n-alkoxy the total number of carbon number of carbon plus oxygen atoms in the two groups R1 and R2 is less than 10.
一种含氟化合物,其式如下
其中
R 是氢或最多有 12 个碳原子的烷基;
R2选自氢、最多具有12个碳原子的烷基、最多具有12个碳原子的烷氧基、
其中 R3 是氢或最多具有 12 个碳原子的烷基,R4 是氢、最多具有 12 个碳原子的烷基或最多具有 12 个碳原子的烷氧基;
代表环己烷环,如为 1,4-二取代环,则为反式构型;
代表一个苯环; X、Y 和 Z 各自独立地代表氢或位于一个或多个苯环侧位的氟,条件是 X、Y 和 Z 中至少有一个代表氟; n = 0 或 1,条件是当
是
且 R 为烷基;但在式 l 中,当 n 为 1 且
其中 R 为正烷基,R2 为正烷基或正烷氧基时,R1 和 R2 两个基团中碳原子加氧原子的总数小于 10。