Reaction of Bromoacetyl and Sulfhydryl Groups: Efficient Synthesis of Aromatic Oligoamides Consisting of Benzene-1,3,5-tricarboxamide Units
摘要:
A series of aromatic oligoamides consisting of benzene-1,3,5-tricarboxamide (BTA) residues linked by thioether bonds were designed and synthesized based on the highly efficient and specific reaction between sulfhydryl and bromoacetyl groups. Initial assessment of the folding of these oligoamides with circular dichroism (CD) spectroscopy showed that these oligoamides could fold into a helical conformation.
Reaction of Bromoacetyl and Sulfhydryl Groups: Efficient Synthesis of Aromatic Oligoamides Consisting of Benzene-1,3,5-tricarboxamide Units
摘要:
A series of aromatic oligoamides consisting of benzene-1,3,5-tricarboxamide (BTA) residues linked by thioether bonds were designed and synthesized based on the highly efficient and specific reaction between sulfhydryl and bromoacetyl groups. Initial assessment of the folding of these oligoamides with circular dichroism (CD) spectroscopy showed that these oligoamides could fold into a helical conformation.
One-Pot Formation of Aromatic Tetraurea Macrocycles
作者:Zehui Wu、Ting Hu、Lan He、Bing Gong
DOI:10.1021/ol300684j
日期:2012.5.18
Treating derivatives of m-phenylenediamine having different electron-richness and reactivities with triphosgene in the presence of triethylamine led to aromatic tetraurea rnacrocycles in high yields. Factors important for efficiently forming these macrocycles include the molar ratio (2:1) between the diamine and triphosgene, reaction temperature (-75 degrees C), and solvent (CH2Cl2). By controlling the order and rate for adding diamines, tetraurea macrocycles consisting of two different types of monomeric residues have also been obtained in high yields.