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Volumn , Issue 16, 2008, Pages 2455-2458

Preparation and some synthetic applications of 2-hydroxyethyl-substituted cyclopropylamines

Author keywords

Amino acids; Cyclopropanes; Nitriles; Titanium; Transition metals

Indexed keywords

ALCOHOL DERIVATIVE; CYCLOPROPANE DERIVATIVE; GLUTAMIC ACID DERIVATIVE; HYDROXYL GROUP; NITRILE; PROPYLAMINE; PYRROLIZIDINE DERIVATIVE;

EID: 54249100087     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2008-1078180     Document Type: Article
Times cited : (13)

References (43)
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    • Some recent examples: (a) Bégis, G.; Cladingboel, D.; Motherwell, W. B. Chem. Commun. 2003, 2656.
    • Some recent examples: (a) Bégis, G.; Cladingboel, D.; Motherwell, W. B. Chem. Commun. 2003, 2656.
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    • PhD Thesis; Université de Reims: France
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    • For related Ti-mediated coupling of homoallylic alcohols, see: c
    • For related Ti-mediated coupling of homoallylic alcohols, see: (c) Sung, M. J.; Pang, J.-H.; Park, S.-B.; Cha, J. K. Org. Lett. 2003, 5, 2137.
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    • Sung, M.J.1    Pang, J.-H.2    Park, S.-B.3    Cha, J.K.4
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    • 6): δ = 26.98, 38.50, 74.70, 76.94, 116.48, 136.41.
    • 6): δ = 26.98, 38.50, 74.70, 76.94, 116.48, 136.41.
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    • 54249084138 scopus 로고    scopus 로고
    • General Procedure for the MeTi(Oi-Pr) 3-Mediated Cyclopropanation of Homoallylic Alcohols and Nitriles To a solution (under argon) of nitrile (1 mmol) and homoallylic alcohol (1.2 mmol) in THF (10 mL) was added dropwise MeTi(Oi-Pr)3 (1.2 mmol, 0.29 mL) and the reaction was stirred for 30 min. A solution of cyclohexyl magnesium chloride (2.4 mmol, 1.2 mL, 2 M in Et2O) was added dropwise to the mixture and was stirred for 90 min, Chemical Equation Presented) Water (5 mL) was added followed by EtOAc (10 mL, The product was extracted with EtOAc 3 x 10 mL, The combined extracts were dried over MgSO4. After evaporation of the solvent, the product was purified by flash chromatography on SiO2 to give 3a-i or 6a-f
    • 2 to give 3a-i or 6a-f.
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    • +: 192.1388; found: 192.1383.
    • +: 192.1388; found: 192.1383.
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    • In contrast, similar cyclopropanation of substituted homoallylic alcohols and carboxylic esters occurs with good 1,3-diastereoselection, see ref. 10b
    • In contrast, similar cyclopropanation of substituted homoallylic alcohols and carboxylic esters occurs with good 1,3-diastereoselection, see ref. 10b.
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    • For a recent review devoted to aminocyclopropane-carboxylic acid derivatives, see
    • For a recent review devoted to aminocyclopropane-carboxylic acid derivatives, see: Brackmann, F.; de Meijere, A. Chem. Rev. 2007, 107, 4493.
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    • Brackmann, F.1    de Meijere, A.2
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    • For preceding syntheses of 2,3-methanoglutamic acid derivatives, see: a
    • For preceding syntheses of 2,3-methanoglutamic acid derivatives, see: (a) Wakamiya, T.; Oda, Y.; Fujita, H.; Shiba, T. Tetrahedron Lett. 1986, 27, 2143.
    • (1986) Tetrahedron Lett , vol.27 , pp. 2143
    • Wakamiya, T.1    Oda, Y.2    Fujita, H.3    Shiba, T.4
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    • Selected Data of 1-[2-Hydroxy-2-(2-methoxyphenyl)-ethyl]-4-azaspiro[2. 4]heptan-5-one (6f) Minor diastereomer: 1H NMR (250 MHz, MeOD, δ, 0.49 (t, J, 6.0 Hz, 1 H, 0.76 (dd, J, 9.6, 6.0 Hz, 1 H, 1.00 (ddd, J, 9.5, 6.6, 4.4 Hz, 1 H, 1.62 (ddd, J, 14.0, 9.5, 5.8 Hz, 1 H, 1.81-1.85 (m, 1 H, 1.93 (ddd, J, 14.0, 7.6, 4.4 Hz, 1 H, 2.15-2.24 (m, 3 H, 3.84 (s, 3 H, 5.04 (dd, J, 7.6, 5.8 Hz, 1 H, 6.88-6.96 (m, 2 H, 7.21 (td, J, 7.5, 1.4 Hz, 1 H, 7.38 (dd, J, 7.5, 1.4 Hz, 1 H, 13C NMR (62.9 MHz, MeOD, δ, 15.5, 21.4, 31.5, 31.7, 38.0, 44.7, 55.8, 69.7, 111.3, 121.5, 127.6, 129.2, 133.9, 157.6, 180.4. IR (KBr, 3420, 2523, 2076, 1651, 1457, 1117 cm-1. Major diastereomer: 1H NMR (250 MHz, MeOD, δ, 0.41 (t, J, 6 Hz, 1 H, 0.70 (dd, J, 9.5, 6.0 Hz, 1 H, 0.89-0.95 (m, 1 H, 1.64-1.68 (m, 1 H, 1.83 ddd, J, 14.3, 8.8, 5.5 Hz, 1 H
    • +: 192.1443; found: 192.1442.
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    • The tricyclic framework of 7 is rare in the literature, see: (a) Hanessian, S.; Buckle, R.; Bayrakdarian, M. J. Org. Chem. 2002, 67, 3387.
    • The tricyclic framework of 7 is rare in the literature, see: (a) Hanessian, S.; Buckle, R.; Bayrakdarian, M. J. Org. Chem. 2002, 67, 3387.
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    • The pyrrolizidine analogue 7 was recently obtained by Ti-mediated cyclopropanation of unsaturated imides, see: Bertus, P.; Szymoniak, J. Org. Lett. 2007, 9, 659.
    • The pyrrolizidine analogue 7 was recently obtained by Ti-mediated cyclopropanation of unsaturated imides, see: Bertus, P.; Szymoniak, J. Org. Lett. 2007, 9, 659.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.