| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystalline compound having dihydrocoumarin ring and general physical properties required as the liquid crystal compound. SOLUTION: This compound is expressed by formula (1) [wherein, R is H or an alkyl; A<SP>1</SP>to A<SP>3</SP>are each 1,4-cyclohexylene or 1,4-phenylene; Z<SP>1</SP>to Z<SP>3</SP>are each a single bond, -(CH<SB>2</SB>)<SB>2</SB>-, -CH<SB>2</SB>O-, -OCH<SB>2</SB>-, -CF<SB>2</SB>O-, -OCF<SB>2</SB>-, -CH=CH-, -CF=CF-, -C≡C-, -(CH<SB>2</SB>)<SP>4</SP>-, -O(CH<SB>2</SB>)<SB>2</SB>O-, -(CH<SB>2</SB>)<SB>2</SB>CF<SB>2</SB>O-, -(CH<SB>2</SB>)<SB>2</SB>OCF<SB>2</SB>-, -CF<SB>2</SB>O(CH<SB>2</SB>)<SB>2</SB>-, -OCF<SP>2</SP>(CH<SB>2</SB>)<SP>2</SP>-, -CH=CHCH<SB>2</SB>O- or -OCH<SB>2</SB>CH=CH-; X is -H, -F, -Cl, -CN. -CF<SB>3</SB>, -CHF<SB>2</SB>, -CH<SB>2</SB>F, -OCF<SB>3</SB>, -OCHF<SB>2</SB>or -OCH<SB>2</SB>F; G is =O or =S; and (n), (m) are each 0, 1 or 2]. COPYRIGHT: (C)2006,JPO&NCIPI
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