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Volumn 73, Issue 5, 2008, Pages 1919-1924

Efficient transformation of azides to primary amines using the mild and easily accessible CeCl3·;7H2O/NaI system

Author keywords

[No Author keywords available]

Indexed keywords

AZIDO GROUP; LEWIS ACID;

EID: 41149117670     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo7024288     Document Type: Article
Times cited : (55)

References (94)
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    • Balicki, R. Chem. Ber. 1990, 123, 647-648.
    • (1990) Chem. Ber , vol.123 , pp. 647-648
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    • (b) Trost, B. M. Science 1991, 254, 1471-1477.
    • (1991) Science , vol.254 , pp. 1471-1477
    • Trost, B.M.1
  • 41
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    • 3, in fact, shows the same toxicity level as sodium chloride (Imamoto, T. Lanthanides in Organic Synthesis; Academic Press: New York 1994).
    • 3, in fact, shows the same toxicity level as sodium chloride (Imamoto, T. Lanthanides in Organic Synthesis; Academic Press: New York 1994).
  • 55
    • 0037099395 scopus 로고    scopus 로고
    • Although multiple methods for the preparation of organic azides for different purposes are known Rostovtsev, V. V, Green, L. G, Fokin, V. V, Sharpless, K. B. Angew. Chem, Int. Ed. 2002, 41, 2596-2599
    • Although multiple methods for the preparation of organic azides for different purposes are known (Rostovtsev, V. V.; Green, L. G.; Fokin, V. V.; Sharpless, K. B. Angew. Chem., Int. Ed. 2002, 41, 2596-2599),
  • 56
    • 0001071426 scopus 로고    scopus 로고
    • we prefer Kotsuki's procedure by conversion of alcohols to corresponding sulfonates and subsequent nucleophilic substitution by azide anion (Kotsuki, H.; Araki, T.; Miyazaki, A.; Iwasaki, M.; Dana, P. K. Org. Lett. 1999, 3, 499-502).
    • we prefer Kotsuki's procedure by conversion of alcohols to corresponding sulfonates and subsequent nucleophilic substitution by azide anion (Kotsuki, H.; Araki, T.; Miyazaki, A.; Iwasaki, M.; Dana, P. K. Org. Lett. 1999, 3, 499-502).
  • 57
    • 0001147897 scopus 로고    scopus 로고
    • This methodology does not use dichlofomethane as solvent, and then it avoids the presence of an explosive byproduct, the bis-azidomethane, that it could form by reaction of dichloromethane with the nucleophilic azide. See: Hassner, A, Stern, M, Gottlieb, H, Frolow, F. J. Org. Chem. 1990, 55, 2304-2306
    • This methodology does not use dichlofomethane as solvent, and then it avoids the presence of an explosive byproduct, the bis-azidomethane, that it could form by reaction of dichloromethane with the nucleophilic azide. See: Hassner, A.; Stern, M.; Gottlieb, H.; Frolow, F. J. Org. Chem. 1990, 55, 2304-2306.
  • 58
    • 41149106128 scopus 로고    scopus 로고
    • Mixing pure liquids without solvents to dissipate any exothermic decomposition of the reagents or products may be dangerous on a large scale
    • Mixing pure liquids without solvents to dissipate any exothermic decomposition of the reagents or products may be dangerous on a large scale.
  • 62
    • 0040427329 scopus 로고    scopus 로고
    • The chiral amine 21 was hypothesized to be (1S,2S, 5R)-configurated as reported in the literature (Smith, H. E.; Gordon, A. W.; Bridges, A. F. J. Org. Chem. 1974, 39, 2309-2311).
    • The chiral amine 21 was hypothesized to be (1S,2S, 5R)-configurated as reported in the literature (Smith, H. E.; Gordon, A. W.; Bridges, A. F. J. Org. Chem. 1974, 39, 2309-2311).
  • 76
    • 41149140080 scopus 로고    scopus 로고
    • Microwave irradiation experiments were conducted using a CEM Discover monomode reactor with the temperature monitored by a built-in infrared sensor. This reactor is equipped with PowerMax technology that allows simultaneous cooling of a reaction with compressed gas while irradiating it with microwave energy enhanced microwave synthesis, Thus, energy can be continuously applied while keeping the bulk temperature at a set level: this feature prevents unwanted side reactions and allows for cleaner and faster reactions. For details, see
    • Microwave irradiation experiments were conducted using a CEM Discover monomode reactor with the temperature monitored by a built-in infrared sensor. This reactor is equipped with PowerMax technology that allows simultaneous cooling of a reaction with compressed gas while irradiating it with microwave energy (enhanced microwave synthesis). Thus, energy can be continuously applied while keeping the bulk temperature at a set level: this feature prevents unwanted side reactions and allows for cleaner and faster reactions. For details, see http://www.cemsynthesis.
  • 84
    • 41149113184 scopus 로고    scopus 로고
    • The use of less than 5 equiv of NaI decreases not only the amount of the conversion but also the rate of the reaction.
    • The use of less than 5 equiv of NaI decreases not only the amount of the conversion but also the rate of the reaction.
  • 85
    • 41149136917 scopus 로고    scopus 로고
    • +≡ N; see: The Chemistry of the Azido Group; Patai, S., Ed.; Interscience: London, 1971; p 4.
    • +≡ N; see: The Chemistry of the Azido Group; Patai, S., Ed.; Interscience: London, 1971; p 4.
  • 86
    • 41149119700 scopus 로고    scopus 로고
    • Derivatives of polivalent iodine are highly unstable and can exist only as short lived reactive intermediate; see: Varvoglis, A. Hypervalent Iodine in Organic Synthesis; Academic Press: London, 1997
    • Derivatives of polivalent iodine are highly unstable and can exist only as short lived reactive intermediate; see: Varvoglis, A. Hypervalent Iodine in Organic Synthesis; Academic Press: London, 1997.
  • 87
    • 41149089040 scopus 로고    scopus 로고
    • In this reaction, iodide ion is viewed as a Lewis base, and the iodine is a Lewis acid. Our solution appears yellow at the beginning then becomes brown for higher concentration of triiodide ion, and significant amount of triiodide has also been observed by mass spectral data
    • In this reaction, iodide ion is viewed as a Lewis base, and the iodine is a Lewis acid. Our solution appears yellow at the beginning then becomes brown for higher concentration of triiodide ion, and significant amount of triiodide has also been observed by mass spectral data.
  • 93
    • 41149094253 scopus 로고    scopus 로고
    • Presented in this Experimental Section is the general procedure for this transformation, complete experimental procedures, and spectral data for new compounds
    • Presented in this Experimental Section is the general procedure for this transformation, complete experimental procedures, and spectral data for new compounds.
  • 94
    • 41149098357 scopus 로고    scopus 로고
    • For TLC detection of azide starting materials we have used Seebach staining solution, which is a mixture of molibdate phosphoric acid, cerium-(IV) sulfate tetrahydrate, sulfuric acid, and water
    • For TLC detection of azide starting materials we have used Seebach staining solution, which is a mixture of molibdate phosphoric acid, cerium-(IV) sulfate tetrahydrate, sulfuric acid, and water.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.