67761-04-0Relevant articles and documents
Method for preparing diazacyclooctane intermediate and diazacyclooctane
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Paragraph 0019; 0023-0046, (2020/06/17)
The invention provides a method for preparing a diazacyclooctane intermediate and diazacyclooctane. The preparation method comprises the following steps: synthesizing 1,5-bis(p-toluenesulfonyl)-1,5-diazacyclooctane from 1,3-bis(p-toluenesulfonyl)-1,3-dioxypropane, 1,3-bis(p-toluenesulfonyl)-1,3-propane diamine and sodium methoxide under a temperature condition of 60-100 DEG C; then synthesizing 1,5-diazacyclooctane bromate from 1,5-bis(p-toluenesulfonyl)-1,5-diazacyclooctane, phenol and hydroacetic acid; and finally, synthesizing 1,5-diazacyclooctane from 1,5-diazacyclooctane bromate and sodium methoxide. According to the method, the yield of the 1,5-bis(p-toluenesulfonyl)-1,5-diazacyclooctane can be increased, and the reaction time for synthesizing the 1,5-diazacyclooctane can be shortened.
An Alternative Synthesis of Cyclic Aza Compounds
Boerjesson, L.,Welch, C. J.
, p. 621 - 626 (2007/10/02)
A series of cyclic mono-, di- and poly-aza compounds has been synthesised in moderate to good yields by reaction of p-toluenesulfonamide and either α,ω-ditosylates or α,ω-dichlorides.
Organic Synthesis Using PTC: Part 8 - Synthesis of Macrocylic Systems Containing Nitrogen and/or Oxygen as Heteroatom(s)
Singh, Paramjit,Jain, Anupa
, p. 790 - 792 (2007/10/02)
Reactions of p-toluene/benzenesulphonamides with p-toluenesulphonate ester of diols under liquid-liquid and solid-liquid phase transfer (PT) conditions give cyclic N-p-toluenesulphonyl or N-benzenesulphonyl derivatives with 1:1 and/or 2:2 stoichiometries.Thus, the cyclic system containing N and/or O as heteroatom(s) have been procured usimg this procedure.
A THERMOMETRIC TITRIMETRIC STUDY OF THE COMPLEXATION OF ALKALINE-EARTH METALS BY MACROCYCLIC POLY(AMINOCARBOXYLIC) ACIDS
Ewin, Gavin,Hill, John O.
, p. 3501 - 3519 (2007/10/02)
Thermometric titrimetry has been employed to determine K, ΔH and ΔS data for the complexation reaction in aqueous solution of 1,4-piperazine-N,N'-diacetic acid, 1,5-diazacyclooctane-N,N'-diacetic acid, 1-oxa-4,7-diazacyclononane-N,N'-diacetic acid, 4-oxa-1,7-diazacyclodecane-N,N'-diacetic acid and 1,11-dioxa-4,8-diazacyclotridecane-N,N'-diacetic acid with alkaline earth metal cations.Factors influencing the thermodynamic stability of these complexes are discussed.