Calix[3]amides—bowl-shaped cyclic trimers toward building block for molecular recognition: self-complementary dimeric structure in the crystal
作者:Fumiaki Imabeppu、Kosuke Katagiri、Hyuma Masu、Takako Kato、Masahide Tominaga、Bruno Therrien、Hiroaki Takayanagi、Eisuke Kaji、Kentaro Yamaguchi、Hiroyuki Kagechika、Isao Azumaya
DOI:10.1016/j.tetlet.2005.11.082
日期:2006.1
Bowl-shaped cyclic trimers of aromatic amides were simply synthesized in high yield by condensation reaction of meta-substituted 3-(alkylamino)benzoic acid using dichlorotriphenylphosphorane. The cyclic amides exist in syn conformation, which has a small chiral cavity, and a pair of each enantiomeric conformer formed a dimeric structure in the crystal.
通过间位取代的3-(烷基氨基)苯甲酸与二氯三苯基磷烷的缩合反应,可以高收率简单地合成碗状的芳香族酰胺环状三聚体。环状酰胺以顺式构象存在,具有小的手性腔,一对对映异构构象异构体在晶体中形成二聚结构。