＜正＞Since the first example reported by Ancheson et al,the three-component reactions based on nitrogen-containi...
Yong Xin~1,Shizheng Zhu~* Key Laboratory of Organofluorine Chemistry,Shanghai Institute of Organic Chemistry,The Chinese Academy of Sciences,345Lingling Road,Shanghai 200032,P.R.China
In the presence of Cu（I） and triethyl amine, one-pot three-component reaction of fluoroalkanesulfonyl azides, alkynes and iminophosphoranes in CH2Cl2 at room temperature gave a novel class of fluorinated phosphorus amidines in good yields.
A novel interpenetrating structure [（HMA^＋）（FB^- ）] ·2H2O of melamine（MA） with 4-fluoro-benzoic acid （HFB） was synthesized. It crystallized in the monoclinic system with space group P21/c. The complex has a interpenetrating 2D structure with hydrogen-bonded grid networks. Carboxylic acid to melamine proton transfer occurs in the complex. The adjacent HMA^＋ cations related by an inverse center form cationic [HMA^＋]∞ ribbons via a pair of N-H…N hydrogen bonds. Adjacent FB-anions are paired by C-H…F hydrogen bonds to form dimers, which are connected to [HMA^＋]∞ ribbons through N-H…O interactions. The supramolecular features in the complex are guided by control of strong N-H…N, N-H…O and O-H…O hydrogen bonds, as well as highly directional weak C-H…F interactions and aromatic π-π stacking interactions.
＜正＞owing to their biologlical activity and medicinal significance,benzoxazoles and benzothiazoles have drawn c...
Jiwei Gu~1,Shizheng Zhu~* Key Laboratory of Organofluorine Chemistry,Shanghai Institute of Organic Chemistry,The Chinese Academy of Sciences,345Lingling Road,Shanghai 200032,P.R.China
