- Corresponding amine nitrile and method of manufacturing thereof
-
The invention relates to a preparation method of nitrile. Compared with the prior art, the preparation method has the characteristics of obvious reduction of the usage amount of ammonia sources, low environmental pressure, low energy consumption, low production cost, high purity and yields of nitrile products, and the like, and can be used for obtaining nitrile with a more complex structure. The invention also relates to a method for preparing corresponding amine with nitrile.
- -
-
Paragraph 0124; 0125; 0129
(2018/05/24)
-
- Corresponding amine nitrile and method of manufacturing thereof (by machine translation)
-
The present invention relates to a nitrile manufacturing method, which has characteristics of significantly-reduced ammonia source consumption, low environmental pressure, low energy consumption, low production cost, high nitrile purity, high nitrile yield and the like compared with the method in the prior art, wherein nitrile having a complicated structure can be obtained through the method. The present invention further relates to a method for producing a corresponding amine from the nitrile.
- -
-
Paragraph 0124; 0125; 0126; 0129
(2018/07/15)
-
- Corresponding amine nitrile and method of manufacturing thereof
-
The invention relates to a preparation method of nitrile. Compared with the prior art, the preparation method has the characteristics of obvious reduction of the usage amount of ammonia sources, low environmental pressure, low energy consumption, low production cost, high purity and yields of nitrile products, and the like, and can be used for obtaining nitrile with a more complex structure. The invention also relates to a method for preparing corresponding amine with nitrile.
- -
-
Paragraph 0125; 0126; 0129; 0130
(2018/07/15)
-
- Structure-reactivity studies on .OH radical reaction with substituted dialkyl sulfides
-
The results of the reaction of an .OH radical with a number of functionalized organic sulfides reported here demonstrate that the pH, the nature of the functional group and the chain length affect the nature of the .OH radical reaction with sulfides. The transient absorption spectrum (λmax = 295 nm), formed on reaction of .H atoms and .OH radicals with an aqueous solution of 2-(methylthio)ethanol and 2-(ethylthio)ethanol is assigned to the α-thio radical. It decayed by second order kinetics with 2k = 5.2 × 109 dm3 mol-1 s-1 and was quenched by oxygen. The transient absorption spectra (λmax = 480 and 500 nm respectively), obtained on reaction with .OH radicals (pH = 1 ), are assigned to a sulfur centered dimer radical cation. The variation of the transient absorbance with pH showed an inflection point at pH =2.1. The reaction of .OH radicals (pH = 6) with 2,2′-thiodiethanoyl chloride showed the formation of α-thio radicals (λmax = 300 nm) and an OH-adduct (λ = 350-380 nm), whereas in acidic solutions, the transient spectrum (λmax = 340 nm, τ = 0.8 μs) is assigned to an intra-molecular radical cation with a 4-membered ring configuration. The transient species (λmax = 370 nm, τ = 17 μs) formed on reaction of .OH radicals with a 3,3′-thiodipropionyl chloride is assigned to a 5-membered intra-molecular radical cation and remained independent of pH. The OH-adduct (λmax = 350 nm, pH = 11) of 3,3′-thiodipropionamide is observed to undergo transformation to an intra-molecular radical cation (λmax = 370 nm). The transformation is not observed in acidic solutions and only an intra-molecular radical cation (λmax = 370 nm) is observed immediately after the pulse. The contribution of α-thio radicals of 2,2′-thiodiethanamide decreased with pH, and in neutral solutions .OH radicals are observed to react mainly by OH-adduct formation whereas in acidic solutions (pH = 1), as intra-molecular radical cation (λmax = 335 nm) with a 4-membered ring configuration is inferred to be the transient species.
- Gawandi,Mohan,Mittal
-
p. 1425 - 1432
(2007/10/03)
-
- Esters of Thiodiglycollic and Thiodipropionic Acids and 2,5-Dicarboxy-3,4-dihydroxythiophene as Potential Slow Acting Anticancer Agents
-
A series of esters of thiodiglycollic and thiodipropionic acids and 2,5-dicarboxy-3,4-dihydroxythiophene have been synthesised with a view to testing their anticancer properties.The esters, as against parent acids are expected to have a prolonged effect.
- Kumar, Anil,Tilak, B. D.
-
p. 880 - 882
(2007/10/02)
-