A New Series of Triazine-core Based Mesogenic Derivatives: Synthesis, Characterization and Mesomorphic Study
摘要:
The synthesis, characterization and mesomorphic properties of two new series of triazine-core based liquid crystals have been investigated. The amino triazine derivatives were characterized by elemental analysis, Fourier transforms infrared (FTIR), 1HNMR and mass spectroscopy. The liquid crystalline properties of these compounds were examined by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). DSC and POM confirmed nematic (N) and columnar mesophase textures of the materials. The formation of mesomorphic properties was found to be dependent on the number of methylene unit in alkoxy side chains.
A New Series of Triazine-core Based Mesogenic Derivatives: Synthesis, Characterization and Mesomorphic Study
摘要:
The synthesis, characterization and mesomorphic properties of two new series of triazine-core based liquid crystals have been investigated. The amino triazine derivatives were characterized by elemental analysis, Fourier transforms infrared (FTIR), 1HNMR and mass spectroscopy. The liquid crystalline properties of these compounds were examined by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). DSC and POM confirmed nematic (N) and columnar mesophase textures of the materials. The formation of mesomorphic properties was found to be dependent on the number of methylene unit in alkoxy side chains.
Process for preparing amide derivatives from halomines and acid halides
申请人:AMERICAN CYANAMID COMPANY
公开号:EP0541966A2
公开(公告)日:1993-05-19
This invention provides a process for preparing amide derivatives of acids by the reaction of haloamines and acid halides.
Melamine derived acid amides are prepared by reaction of trichloro and hexachloromelamines with chloroformates and acid chlorides. The by-product chlorine may be recycled in this process.
Amides, carbamates, sulfonamides, phosphoramides, and related amide derivatives may be prepared by the novel process of the invention.
Process for preparing amide derivatives from halominotriazines and acid halides
申请人:CYTEC TECHNOLOGY CORP.
公开号:EP0565774A2
公开(公告)日:1993-10-20
This invention provides a process for preparing amide derivatives of acids by the reaction of haloaminotriazines and acid halides.
This invention also provides a process for preparing isocyanates and isocyanate adducts from amide derivatives derived from haloaminotriazines and acid halides such as oxalyl chloride, phosgene and phosgene analogs.
Melamine derived acid amides are prepared by reaction of trichloro and hexachloromelamines with chloroformates and acid chlorides. The by-product chlorine may be recycled in this process.
Amides, carbamates, sulfonamides, phosphoramides, and related amide derivatives may be prepared by the novel processes of the invention.
A process for preparing isocyanate compounds from haloaminotriazines and acid halides
申请人:CYTEC TECHNOLOGY CORP.
公开号:EP0930303A2
公开(公告)日:1999-07-21
This invention provides a process for preparing isocyanates and isocyanate adducts from amide derivatives derived from haloaminotriazines and acid halides such as oxalyl chloride, phosgene and phosgene analogs.
Melamine derived acid amides are prepared by reaction of trichloro and hexachloromelamines with chloroformates and acid chlorides. The by-product chlorine may be recycled in this process.
A composition of matter represented by the formula:
wherein
nis an integer from 1 to 5; and
Xis a leaving group selected from the group consisting of chloride, bromide, iodide, fluoride, alkysulfonate, arylsulfonate, and mixtures thereof.
由以下式子表示的物质组合物
其中
n 是 1 至 5 的整数;以及
X 是选自氯化物、溴化物、碘化物、氟化物、烷基磺酸盐、芳基磺酸盐及其混合物的离去基团。