Synthesis of Polyamides by Direct Polycondensation with Propylphosphonic Anhydride as an Activating Agent

nano-rods zno as an efficient catalyst for the synthesis of chromene phosphonates, direct amidation and formylation of amines

چکیده ندارد.

Synthesis of new macrocyclic polyamides as antimicrobial agent candidates.

A series of macrocyclic imides and Schiff-bases have been prepared via the cyclocondensation of pyridine-2,6-dicarbonyl dichloride (1) with L-ornithine methyl ester to give the corresponding macrocyclic bisester 2. Treatment of 2 with hydrazine hydrate gave macrocyclic bisacid hydrazide 3, which was used as starting material. Condensation of bishydrazide 3 with diacid anhydrides or aromatic ald...

Propylphosphonic anhydride (T3P) mediated synthesis of novel 2-aryl quiolines and evaluation of their anticancer activity

Polycondensation of Tetrahydrofuran with Phthalic Anhydride Induced By a Proton Exchanged Montmorillonite Clay

“Maghnite” a montmorillonite sheet silicate clay, exchanged with protons to produce “H-Maghnite” is an efficient catalyst for polymerization of many vinylic and heterocyclic monomers (Belbachir, M. U.S. Patent. 066969.0101 –2001). The structure compositions of both “Maghnite” and “H-Maghnite” have been developed. This catalyst was used for the polycondensation of the tetrahydrofuran with phthal...

Analysis of platelet-activating factor by GC-MS after direct derivatization with pentafluorobenzoyl chloride and heptafluorobutyric anhydride.

Parallel analysis of platelet-activating factor (PAF) using chemical ionization gas chromatography-mass spectrometry after direct derivatization with pentafluorobenzoyl chloride (PFB) and heptafluorobutyric anhydride (HFB) provides a facile and highly sensitive means for detecting and elucidating the structure of the numerous alkyl-chain homologs of this acetylated phospholipid autacoid. In the...