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Volumn 71, Issue 25, 2015, Pages 4282-4295

Cycloaddition reactions of glycine imine anions to phenylazocarboxylic esters - A new access to 1,3,5-trisubstituted 1,2,4-triazoles

Author keywords

1,2,4 Triazoles; Azo compounds; Azocarboxylic esters; Cycloaddition; Glycine imines

Indexed keywords

ANION; AZOBENZENE DERIVATIVE; GLYCINE; GLYCINE IMINE; IMINE; PHENYLAZOCARBOXYLATE ESTER; TRIAZOLE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 84930180882     PISSN: 00404020     EISSN: 14645416     Source Type: Journal    
DOI: 10.1016/j.tet.2015.04.078     Document Type: Article
Times cited : (17)

References (63)
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    • Reviews on uses preparation of 1,2,4-triazoles
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    • For recent examples, see
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    • For recent syntheses of 1,3-, 1,5- and 3,5-disubstituted 1,2,4-triazoles, see: 1,3
    • For recent syntheses of 1,3-, 1,5- and 3,5-disubstituted 1,2,4-triazoles, see: 1,3
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    • For a recently developed four-component reaction to access triazoles via acylhydrazones, see
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    • The experiments with 2-isocyano-3-phenylpropanoate and 1b were carried out under conditions reported in ref. 18. No triazoles or triazolines could be detected by 1H NMR analysis of the reaction mixtures
    • The experiments with 2-isocyano-3-phenylpropanoate and 1b were carried out under conditions reported in ref. 18. No triazoles or triazolines could be detected by 1H NMR analysis of the reaction mixtures.
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    • The presence of a triazoline was assumed due to a 1H-NMR singlett signal around 5.70 ppm
    • The presence of a triazoline was assumed due to a 1H-NMR singlett signal around 5.70 ppm.
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    • 2 alone is not sufficient to achieve Boc-cleavage and aromatization
    • 2 alone is not sufficient to achieve Boc-cleavage and aromatization.
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    • The formation of triazole 8 can be explained by an increased reactivity of the tert-butyl ester on the triazoline stage of the reaction while the decarboxylation of 6p forming product 7 might be favored due to steric reasons
    • The formation of triazole 8 can be explained by an increased reactivity of the tert-butyl ester on the triazoline stage of the reaction while the decarboxylation of 6p forming product 7 might be favored due to steric reasons.
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    • The position of the double bond in triazoline 14 was determined by HSQC and HMBC experiments
    • The position of the double bond in triazoline 14 was determined by HSQC and HMBC experiments.
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    • For the addition (and cycloaddition) of deprotonated glycine imines to enones, see
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    • References for known compounds 3a, d, f, 10 and 13
    • References for known compounds 3a, d, f, 10 and 13


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.