、 1,3,5-triureidobenzene 以
乙醚 为溶剂,
以It is obtained from 1,3,5-triisocyanato-benzene with ammonia in ether (Gill et al., Soc. 1949, 1753; WG P 815 486)的产率得到1,3,5-triisocyanatobenzene
参考文献:
名称:
Benzene-tricarboxylic acid-(1,3,5)-tri-N-chloramide and process for the
Provided is a thermal responsive molecule favorable as a thermal responsive low-molecular hydrogelling agent or the like that gels in response to heat. The thermal responsive molecule is characterized in that an amphiphilic side chain obtained by bonding a hydrophilic side chain such as triethylene glycol and a hydrophobic group such as an octyl group is introduced into a C
3
-symmetric disc-shaped molecular skeleton such as 1,3,5-benzenetriyltriurea. For example, the thermal responsive molecule is 1,1′,1″-(benzene-1,3,5-triyl)tris3-(2,5,8,11-tetraoxaheptadecan-17-yl)urea} or the like.
Phloroglucinol is prepared by chlorinating benzenetricarboxylic acid-(1,3,5)-triamide in an aqueous, inorganic acid medium to form benzene-tricarboxylic acid-(1,3,5)-tri-N-chloramide, which is a new compound; the latter is converted by treatment with ammonia into 1,3,5-triureido-benzene, which is hydrolyzed in inorganic acid solution to phloroglucinol.
Safer Conditions for the Curtius Rearrangement of 1,3,5‐Benzenetricarboxylic Acid
作者:Matthew C. Davis
DOI:10.1080/00397910701555766
日期:2007.10.1
A rapid method to prepare 1,3,5-triaminobenzene and its derivatives is the tris-Curtius rearrangment of 1,3,5-benzenetricarboxylic acid. The hazards associated with the acyl azide route are minimized by using 1,2-dichloroethane as solvent. A second method that avoids acyl azide preparation uses diphenylphosphoryl azide to yield the tricarbamate in one step.