Design, synthesis and biological evaluation of novel 6,7,8,9-tetrahydro-2-(2-aryloxypyrimidin-4-yl)-2<i>H</i>-[1,2,4]triazolo[4,3-<i>a</i>]azepin-3(5<i>H</i>)-ones
作者:Yi-Feng Wang、Wei-Min Liu、You-Quan Zhu、Xiao-Mao Zou、Fang-Zhong Hu、Hua-Zheng Yang
DOI:10.1002/jhet.5570430520
日期:2006.9
A series of novel6,7,8,9-tetrahydro-2-(2-aryloxypyrimidin-4-yl)-2H-[1,2,4]triazolo[4,3-a]azepin-3(5H)-ones were designed and efficiently synthesized. Their structures were determined by IR, 13C and 1H NMR, mass spectroscopy, and elemental analysis. These compounds were screened for herbicidal activities against rape and barnyard grass. Compounds 5a-5f and 5m exhibited moderate herbicidal activity
一系列新颖的6,7,8,9-四氢-2-(2-芳氧基嘧啶-4-基)-2 H- [1,2,4]三唑[4,3 - a ] azepin-3(5 H)-被设计并有效地合成。通过IR,13 C和1 H NMR,质谱和元素分析确定其结构。筛选了这些化合物对油菜和n草的除草活性。化合物5a-5f和5m对油菜表现出中等的除草活性。另外,研究了中间体1-(氮杂-2-亚甲基)-2-(2-氯嘧啶-4-基)-肼(3)的合成,并讨论了初始步骤收率低的原因。出色地。
Liquid-crystalline compounds and liquid-crystalline polymers
申请人:Idemitsu Kosan Co., Ltd.
公开号:US05243065A1
公开(公告)日:1993-09-07
A liquid-crystalline polymer having the repeating units represented by the following general formula (II): ##STR1## wherein R.sup.1 is ##STR2## wherein a is an integer having a value of 1 to 10, b is an integer having a value of 0 or 1, c is an integer having a value of 1 to 30, X.sup.1 is --COO--, --O-- or a single bond, M.sup.1 is ##STR3## and d is an integer having a value of 1 to 5. The liquid-crystalline polymer exhibits ferroelectricity in a wide temperature range including room temperature and has a high speed of response to electric field.
An optically active compound represented by formula (I):
wherein R¹ represents an alkyl group having from 6 to 18 carbon atoms or an alkoxy group having from 6 to 18 carbon atoms; A represents
represents a nitrogen-containing hetero-aromatic ring; n and m each represents 0 or 1; R² represents an alkyl group having from 1 to 12 carbon atoms; and C* is an asymmetric carbon atom. The compound of formula (I) exhibits excellent physicochemical stability, a low temperature range for the chiral smectic C phase when used either alone or in combination with other compounds, and a rapid response.