140840-03-5

Upstream product

• 100-44-7 benzyl chloride 
• 112-24-3 triethylentetramine 
• 100-52-7 benzaldehyde 
• 81904-67-8 1,3-bis-(2-benzylidenamino-ethyl)-2-phenyl-imidazolidine 

Downstream Products

• 140840-06-8 1,10-Dibenzyl-1,2,3,5,6,8,9,10-octahydro-diimidazo[1,2-a;2',1'-c]pyrazine 
• 1198592-25-4 tetra-tert-butyl N,N'''-dibenzyltriethylenetetramine N,N',N'',N'''-tetraacetate 

Relevant academic research and scientific papers

Sterilizing agent used for oilfield polymer-contained sewage and preparation method of sterilizing agent

The invention belongs to the technical field of oilfield sewage pretreatment, and particularly relates to a sterilizing agent used for oilfield polymer-contained sewage and a preparation method of the sterilizing agent. The sterilizing agent is prepared in a mode that benzyl halide is reacted with polyethylene polyamine, wherein the molar ratio of the benzyl halide to the polyethylene polyamine is 1:(2.0-2.2), and the preferred ratio is 1:2.0. The benzyl halide is benzyl chloride or benzyl bromide, and the polyethylene polyamine is one of diethylenetriamine, triethylene tetramine and tetraethylenepentamine. According to the sterilizing agent, positive charges in the molecular structure of the sterilizing agent are dispersed, the compatibility of the sterilizing agent with the polymer-contained sewage is good, and the phenomenon that suspended solids in the sewage are not increased cannot be caused; due to the sterilizing agent molecule with lipophilic groups at the two ends and hydrophilic groups in the middle, the permeability of the molecule is good; meanwhile, the raw materials of the sterilizing agent are easy to obtain, the synthetic method is simple, the cost is low, the sterilizing effect is good, and the sterilizing rate is higher than 98.0%. Therefore, the sterilizing agent can be widely used in the sterilization process of the oilfield polymer-contained sewage.

An efficient route to pyridine and 2,2'-bipyridine macrocycles incorporating a triethylenetetraminetetraacetic acid core as ligand for lanthanide ions

Two novel macrocyclic chelators L1 and L2 incorporating an intracyclic pyridine or 2,2'-bipyridine unit and a triethylenetetraminetetraacetic acid core (TTTA) were synthesized with the aim of forming lanthanide complexes suitable as

One pot symmetrical and dissymmetrical regiospecific ω,ω′-bis mono N-alkylation of linear tetraamines via their chromium, molybdenum or tungsten tricarbonyl complexes

Dissymmetric ω, ω′-N-dialkylated linear tetraamines have been obtained after the successive reactions of two aldehydes and subsequent reduction and removal of the M(CO)3 protection.