Sulfur Nitrides in Organic Chemistry. 18. Preparation and Reduction of Benzo[1,2-<i>c</i>:3,4-<i>c</i>′:5,6-<i>c</i>″]tris- and Benzo[1,2-<i>c</i>:3,4-<i>c</i>′]bis[1,2,5]thiadiazole. A Convenient Route to Benzenehexamine and 1,2,3,4-Benzenetetramine
Benzotris- (3) and benzobis[1,2,5]thiadiazole (4) were prepared in a moderate yield, respectively, by the reaction of tetrasulfur tetranitride (5) with halocatechols (6) and -resorcinols (7). The reduction of 3 and 4 with Sn powder in a mixture of concentrated hydrochloric acid and dioxane gave benzenehexamine (1) and 1,2,3,4-benzenetetramine (2a) and its 5-methyl derivative (2b) in good yields, as
[EN] LYOTROPIC LIQUID CRYSTAL SYSTEMS BASED ON BISACENAPHTHOPYRAZINOQUINOXALINE DERIVATIVES AND METHODS OF MAKING<br/>[FR] SYSTÈMES DE CRISTAUX LIQUIDES LYOTROPES BASÉS SUR DES DÉRIVÉS DE BISACÉNAPHTOPYRAZINOQUINOXALINE ET LEURS PROCÉDÉS DE FABRICATION
申请人:NITTO DENKO CORP
公开号:WO2009123968A1
公开(公告)日:2009-10-08
A family of bisacenaphthopyrazinoquinoxaline derivatives of formula (I) and (II) is disclosed. These compounds are capable of forming liquid crystal systems that can produce optically isotropic or anisotropic films with desirable optical properties : (I), (II) wherein Ri, R2, Rs, R4, R5 and R& are each independently selected from -H, -SO3M, -OH, -NH2, -Cl, -Br, -I, -NO2, -F, -CF3, -CN, -COOH, -CONH2, alkyl, aryl, alkynyl, alkenyl, alkoxyl, alkylamino, phenoxyl, and phenylamino groups; M is one or more counter ions; j is the number of counter ions associated with the compound; and n is an integer in the range of 1 to S.
Strongly Hydrogen-Bonded Networks Formed by Sulfate and Bisulfate Salts of Benzenetetramines
作者:Johann O. E. Sosoe、Thierry Maris、James D. Wuest
DOI:10.1021/acs.cgd.3c00950
日期:2023.12.6
such as the nature of their salts and their preferred patterns of association, which determine how they can be used to construct predictably ordered redox-active solids. To provide relevant new information, we have studied a series of sulfate and bisulfate salts of the 1,2,4,5- and 1,2,3,4-isomers, which have been found to crystallize as strongly hydrogen-bondednetworks. The results of this work promise
LYOTROPIC LIQUID CRYSTAL SYSTEMS BASED ON BISACENAPHTHOPYRAZINOQUINOXALINE DERIVATIVES AND METHODS OF MAKING
申请人:Zheng Shijun
公开号:US20110026117A1
公开(公告)日:2011-02-03
A family of bisacenaphthopyrazinoquinoxaline derivatives of formula (I) and (II) is disclosed. These compounds are capable of forming liquid crystal systems that can produce optically isotropic or anisotropic films with desirable optical properties: (I), (II) wherein Ri, R2, Rs, R4, R5 and R& are each independently selected from —H, —SO
3
M, —OH, —NH
2
, —Cl, —Br, —I, —NO
2
, —F, —CF
3
, —CN, —COOH, —CONH
2
, alkyl, aryl, alkynyl, alkenyl, alkoxyl, alkylamino, phenoxyl, and phenylamino groups; M is one or more counter ions; j is the number of counter ions associated with the compound; and n is an integer in the range of 1 to S.