A compound represented by the formula (1) is provided.
In the formula (1), for example, R
1
and R
2
are alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; the ring A and the ring B are 1,4-cyclohexylene or 1,4-phenylene; Z
1
and Z
2
are a single bond and Z
3
is —CH
2
O— or —OCH
2
—; Y
1
and Y
2
are halogen, —CF
3
, —CHF
2
, —CH
2
F, —OCF
3
, —OCHF
2
or —OCH
2
F; and m and n is 0, 1 or 2, p is 1 or 2, and the sum of m, n and p is 1, 2 or 3.
提供了一个由式(1)表示的化合物。在式(1)中,例如,R1和R2是具有1至10个
碳的烷基,具有1至9个
碳的烷
氧基或具有2至10个
碳的
烯基;环A和环B是1,4-
环己基或1,4-
苯基;Z1和Z2是单键,Z3是—
CH2O—或—OCH2—;Y1和Y2是卤素,—
CF3,—
CHF2,—
CH2F,—O ,—O 或—O ;m和n为0、1或2,p为1或2,m、n和p的总和为1、2或3。