- LIQUID CRYSTAL COMPOUND AND LIQUID CRYSTAL COMPOSITION INCLUDING THE SAME
-
PROBLEM TO BE SOLVED: To provide a new liquid crystal compound having low-temperature stability. SOLUTION: The present invention provides a liquid crystal compound shown by formula I. (R1 and R2 independently represent F, H, a C1-15 linear alkyl group, a C3-15 branched alkyl group or the like; R3 is a C1-8 linear alkyl group or a C3-8 branched alkyl group; n is an integer of 0-4; ring A1 is a 1,4-phenylene group or a 1,4-cyclohexylene group; ring A2 and ring A3 independently represent a 1,4-phenylene group, a 1,4-cyclohexylene group or the like; Z1 and Z2 independently represent a single bond, -CH2-CH2- or the like). SELECTED DRAWING: None COPYRIGHT: (C)2019,JPO&INPIT
- -
-
Paragraph 0124-0126
(2019/12/10)
-
- Copper-Catalyzed Monoorganylation of Trialkyl Borates with Functionalized Organozinc Pivalates
-
Organozinc pivalates, a recently developed air- and moisture-stable organozinc species, were found for the first time as excellent organometallic species in the monoorganylation of trialkyl borates whereby boronic acids were prepared in high yields. The significant advantage of organozinc pivalates over another previously employed organometallic reagents, e. g., organolithium reagents, Grignard reagents and organozinc halides, is that the generation of multiorganylation byproducts such as borinic acids and trialkylboranes were completely suppressed. Additionally, the in situ generated boronates could be directly arranged into Suzuki-Miyaura type cross-coupling reactions to produce biaryls in high yields.
- Fu, Ying,Gou, Bei-Lei,Shi, Chun-Zhao,Du, Zhengyin,Shen, Tong
-
p. 4253 - 4257
(2018/09/18)
-
- Under the mellow promotion aromatic amine boronise produced by the reaction of an aryl boronic acid and aryl borate method
-
The invention discloses a method for preparation of aryl boronic acid and aryl borate by alcohol-promoted boronation reaction of aromatic amine, the aromatic amine which is easy to get and cheap is used as a raw material, a diboron compound is used as a boron source, a nitrite is used as a diazotization reagent, and the aryl boronic acid and aryl borate are obtained by alcohol-promoted reaction at room temperature in no presence of a catalyst. The method has the advantages of simple operation, mild reaction conditions, no presence of a metal catalyst, reduction of the production cost, high product yield, tolerance to different functional groups on aryl, and a wide adaptive range.
- -
-
Paragraph 0028; 0033-0036
(2017/08/25)
-
- Methanol-promoted borylation of arylamines: A simple and green synthetic method to arylboronic acids and arylboronates
-
A Sandmeyer borylation of arylamines via a SN2Ar pathway promoted by methanol with sodium nitrite and hydrochloric acid as diazotization agent has been developed, which provide a simple and green synthetic method to arylboronic acids and arylboronates. Georg Thieme Verlag Stuttgart New York.
- Zhao, Cong-Jun,Xue, Dong,Jia, Zhi-Hui,Wang, Chao,Xiao, Jianliang
-
p. 1577 - 1584
(2014/07/08)
-
- Multiple C-H activations to construct biologically active molecules in a process completely free of organohalogen and organometallic components
-
(Chemical Equation Presented) Step by step: Highly selective cross dehydrogenase arylation of acetanilides was developed to construct biaryls under mild condition. With this method, different aryl C-H bonds were activated in sequential reactions to construct functionalized carbazoles (see scheme), which are present as key structural units in various biological molecules and organic optical materials.
- Li, Bi-Jie,Tian, Shi-Liang,Fang, Zhao,Shi, Zhang-Jie
-
p. 1115 - 1118
(2008/09/21)
-
- Thrombopoietin mimetics
-
Invented are non-peptide TPO mimetics. Also invented is a method of treating thrombocytopenia, in a mammal, including a human, in need thereof which comprises administering to such mammal an effective amount of a selected substituted naphthimidazole derivative.
- -
-
-