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1. 发明申请

US20030102459A1 Optically active compound and nematic liquid crystal composition containing the compound 失效
标题翻译：含有该化合物的光学活性化合物和向列型液晶组合物
公开(公告)号：US20030102459A1
公开(公告)日：2003-06-05
申请号：US10212230
申请日：2002-08-06
申请人： Mitsubishi Gas Chemical Co., Inc.
发明人： Yasumasa Norisue , Yuki Motoyama , Masahiro Johno
IPC分类号： C09K019/20 , C07C069/76
CPC分类号： C09K19/586 , Y10T428/10
摘要： An optically active compound of the following general formula (1), 1 wherein A is nullCnullCnull or nullCOOnull, each of R1 and R2 is independently CnH2nnull1null, (C2H5)2CHCH2C*H(CH3)OOCnull, CmH2mnull1C*H(CH3)OOCnull or C6H5C*H(CH3)OOCnull in which n is an integer of 2 to 5, m is an integer of 5 to 9, C6H5null is phenyl group, and C* is an asymmetric carbon, provided that there is no case where R1 and R2 are together CnH2nnull1null or C6H5C*H(CH3)OOCnull and that when both R1 and R2 are CmH2mnull1C*H(CH3)OOCnull, m in CmH2mnull1C*H(CH3)OOCnull represented by R1 and m in CmH2mnull1C*H(CH3)OOCnull represented by R2 may be different integers. The optically active compound of the present invention is excellently valuable as a chiral dopant since it has properties that its helical twisting power (HTP) is at least 9, that a helical pitch induced decreases with an increase in temperature and further that its birefringence (nulln) is large.
摘要翻译：下列通式（1）的光学活性化合物，其中A为-C = C-或-COO-，R1和R2各自独立地为C n H 2n + 1，（C 2 H 5）2 CHCH 2 C * H（CH 3）OOC-， CmH2m + 1C * H（CH3）OOC-或C6H5C * H（CH3）OOC-，其中n为2〜5的整数，m为5〜9的整数，C6H5-为苯基，C *为只要不存在R 1和R 2一起为C n H 2n + 1或C 6 H 5 C * H（CH 3）OOC-的情况，并且当R 1和R 2均为C m H 2m + 1C * H（CH 3）OOC-时，m C m H 2 m 由R1表示的+ 1C * H（CH3）OOC-，由R2表示的CmH2m + 1C * H（CH3）OOC-中的m可以是不同的整数。本发明的光学活性化合物作为手性掺杂剂是非常有价值的，因为它具有其螺旋扭转功率（HTP）至少为9的性质，螺距随着温度的升高而降低，并且还有其双折射（DELTAn ）很大。

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