628-87-5Relevant academic research and scientific papers
Precursors of biological cofactors from ultraviolet irradiation of circumstellar/interstellar ice analogues
Meierhenrich, Uwe J.,Munoz Caro, Guillermo M.,Schutte, Willem A.,Thiemann, Wolfram H.-P.,Barbier, Bernard,Brack, Andre
, p. 4895 - 4900 (2005)
Biological cofactors include functionalized derivatives of cyclic tetrapyrrole structures that incorporate different metal ions. They build up structural partnerships with proteins, which play a crucial role in biochemical reactions. Porphyrin, chlorin, bacteriochlorin, and corrin are the basic structures of cofactors (heme. chlorophyll, bacteriochlorophyll, siroheme, F 430, and vitamin B12). Laboratory and theoretical work suggest that the molecular building blocks of proteins (α-amino acids) and nucleic acids (carbohydrates, purines, and pyrimidines) were generated under prebiotic conditions. On the other hand, experimental data on the prebiotic chemistry of cofactors are rare. We propose to search directly for the pathways of the formation of cofactors in the laboratory. Herein we report on the detection of N-heterocycles and amines in the room-temperature residue obtained after photo- and thermal processing of an interstellar ice analogue under high vacuum at 12 K. Among them, hexahydro-1,3,5-triazine and its derivatives, together with monopyrrolic molecules, are precursors of porphinoid cofactors. Hexahydropyrimidine was also detected. This is the first detection of these compounds in experiments simulating circumstellar/interstellar conditions. Except for 2-aminopyrrole and 2,4-diaminofuran, which were only found in 13C-labeled experiments, all the reported species were detected in both 12C- and 13C-labeled experiments, excluding contamination. The molecules reported here might be present in circumstellar/interstellar grains and cometary dust and could be detected by the Stardust and Rosetta missions.
PRODUCTION OF NITROGEN-CONTAINING CHELATORS
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Paragraph 0079-0080, (2022/01/08)
Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, as described herein. In particular, the present disclosure describes a process for the production of a nitrile intermediate by reacting a tetra-amino compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce the chelators at a high yield and/or a high purity.
Corresponding amine nitrile and method of manufacturing thereof
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Paragraph 0136; 0137; 0142, (2018/05/24)
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.
Corresponding amine nitrile and method of manufacturing thereof (by machine translation)
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Paragraph 0136; 0137; 0142, (2018/07/15)
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.
Corresponding amine nitrile and method of manufacturing thereof
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Paragraph 0137; 0138; 0139; 0142; 0143, (2018/07/15)
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.
Preparing method for glyphosate
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Paragraph 0028-0030, (2017/04/05)
The invention relates to a preparing method for glyphosate and belongs to the technical field of chemical engineering. The preparing method specifically comprises the four steps of synthesis of iminodiacetic acid, preparation of pmida, preparation of glyphosate and solid and liquid separation. According to the preparing method, firstly, precious metal silver is loaded on titanium dioxide, the surface nature of titanium dioxide is influenced, electron distribution is changed, and catalytic activity is improved; then, titanium dioxide loaded with silver is loaded into activated carbon and irradiated with an ultraviolet source. The selectivity of glyphosate is greatly improved, the oxidization process of pmida is greatly shortened, the yield of glyphosate is increased to 96.3%, and the product purity can reach 97.6%; besides, the content of methyl aldehyde is low, fewer products are generated, and the requirement of the nation for environment friendliness is met.
METHOD FOR ISOLATING METHYLGLYCINENITRILE-N,N-DIACETONITRILE
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Page/Page column 4, (2012/07/28)
A method for isolating methylglycinenitrile-N,N-diacetonitrile (MGDN) from an aqueous mixture comprising MGDN is provided The method comprises cooling the aqueous mixture in one or more steps In one of these steps the mixture is cooled at a cooling rate of at least 20 K/h from a temperature above the solidification point of MGDN to a temperature below the solidification point of MGDN The method is implemented continuously
METHOD FOR ISOLATING METHYLGLYCINENITRILE-N,N-DIACETONITRILE
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Page/Page column 8-9, (2011/04/26)
A method for isolating methylglycinenitrile-N,N-diacetonitrile (MGDN) from an aqueous mixture comprising MGDN is provided The method comprises cooling the aqueous mixture in one or more steps In one of these steps the mixture is cooled at a cooling rate of at least 20K/h from a temperature above the solidification point of MGDN to a temperature below the solidification point of MGDN The method is implemented continuously
METHOD FOR PRODUCING AMINONITRILES
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Page/Page column 3, (2010/02/17)
The invention relates to a process for preparing an amino nitrile mixture comprising aminoacetonitrile (AAN) and from 5 to 70% by weight of iminodiacetonitrile (IDAN), which comprises heating crude AAN which is largely free of formaldehyde cyanohydrin (FACH-free) at a temperature of from 50 to 150° C.
METHOD FOR ISOLATING METHYL GLYCINE NITRILE-N,N-DIACETONITRILES FROM AN AQUEOUS CRUDE MIXTURE
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Page/Page column 8, (2008/06/13)
The invention relates to a method for isolating methyl glycine nitrile-N,N-diacetonitriles (MGDN) from an MGDN-containing aqueous emulsion with an MGDN content of 3 - 50% by weight in a crystallizer. The inventive method is characterized by (a) cooling the aqueous emulsion, starting from a temperature above the solidification point, to a temperature below the solidification point, the cooling rate in the temporal mean not exceeding 5 K/h, until substantially the total amount of the emulsified MGDN has solidified; and (b) continuing to cool the aqueous suspension obtained and/or concentrating it, the cooling rate being higher than that in step (a).

