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N,N-Difluor-heptafluorisopropylamin, also known as DFHA, is a colorless, volatile liquid with the chemical formula C3F9N. It is a derivative of heptafluoropropan-2-amine, where two hydrogen atoms are replaced by fluorine atoms. DFHA is a highly electronegative compound, making it a strong Lewis base. It is used as a reagent in organic synthesis, particularly in the preparation of fluorinated compounds, due to its ability to act as a nucleophile and a fluorine source. The compound is also known for its low toxicity and high stability, which makes it a preferred choice in various chemical reactions. It is synthesized through the reaction of heptafluoropropan-2-amine with fluorine gas or other fluorinating agents. DFHA is a valuable intermediate in the production of pharmaceuticals, agrochemicals, and other specialty chemicals that require fluorine substitution.

662-23-7

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662-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 662-23-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,6 and 2 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 662-23:
(5*6)+(4*6)+(3*2)+(2*2)+(1*3)=67
67 % 10 = 7
So 662-23-7 is a valid CAS Registry Number.

662-23-7Relevant academic research and scientific papers

Electrochemical fluorination of aliphatic secondary amines

Abe, Takashi,Hayashi, Eiji,Baba, Hajime

, p. 35 - 42 (2007/10/03)

Electrochemical fluorination (ECF) has been examined for six aliphatic secondary amines: N,N-di-ethylamine, N-ethyl,N-n-propylamine, N,N-di-n-propylamine, N-ethyl,N-iso-propylamine, N,N-di-iso-propylamine, and N-methyl,N-n-butylamine. It was found from these amines that not only the corresponding F-(N-fluoro-N,N-dialkylamines) but also F-imines having the same number of the carbon atoms were formed in low yields. The suppression of the C-N bond cleavage (blocking effect) which is expected to occur during fluorination due to the presence of bulky N-alkyl group was not observed as a result of the ECF of these aliphatic secondary amines. It was also found that the change of the initial solute concentration of N,N-di-n-propylamine did not affect on the product yields, which is usually observed for cyclic secondary amines. Several F-(N-fluoro-N,N-dialkylamines) were treated with triphenylphosphine for conversion into the corresponding F-imines. An imine bond was generated during this defluorination exclusively at the site of the alkyl group with a longer chain length when there were two different alkyl groups present in F-(N-fluoro-dialkylamines).

The synthesis of perfluoroamine using nitrogen trifluoride

Takagi, Toshiyuki,Tamura, Masanori,Shibakami, Motonari,Quan, Heng-Dao,Sekiya, Akira

, p. 15 - 17 (2007/10/03)

The reactions of nitrogen trifluoride (1) with hexafluoropropene (2) in the presence of cesium fluoride (CsF) gave 2- (3) and 1-heptafluoropropyldifluoroamine (4) in moderate yields. Tetrafluoroethylene (6) and octafluoro-2-butene (8) similarly reacted with 1 to give corresponding products.

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