메뉴 건너뛰기




Volumn 17, Issue 18, 2011, Pages 4992-5003

Nitrogen dynamics and reactivity of chiral aziridines: Generation of configurationally stable aziridinyllithium compounds

Author keywords

ketoaziridines; lithium; nitrogen dynamics; NMR spectroscopy; stereoselectivity

Indexed keywords

AZIRIDINES; CHIRAL AZIRIDINES; CONFIGURATIONALLY; DFT CALCULATION; DIASTEREOMERIC; DYNAMIC NMR; ELECTROPHILES; EXPERIMENTAL CONDITIONS; HETEROCYCLES; KETOAZIRIDINES; LITHIATED AZIRIDINES; LITHIATION; LONE PAIR; NITROGEN ATOM; NITROGEN DYNAMICS; NITROGEN INVERSION; NMR SPECTROSCOPY; OXAZOLIDINES; OXAZOLINES;

EID: 79954614820     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.201003424     Document Type: Article
Times cited : (20)

References (88)
  • 1
    • 77955170036 scopus 로고    scopus 로고
    • in (Eds.: A. R. Katritzky, C. Ramsden, E. Scriven, R. Taylor), Elsevier, Amsterdam
    • A. Padwa, in Comprehensive Heterocyclic Chemistry III, Vol. 1 (Eds.:, A. R. Katritzky, C. Ramsden, E. Scriven, R. Taylor,), Elsevier, Amsterdam, 2008
    • (2008) Comprehensive Heterocyclic Chemistry III , vol.1
    • Padwa, A.1
  • 7
    • 1542375289 scopus 로고    scopus 로고
    • X. E. Hu, Tetrahedron 2004, 60, 2701-2743
    • (2004) Tetrahedron , vol.60 , pp. 2701-2743
    • Hu, X.E.1
  • 12
    • 0001318042 scopus 로고    scopus 로고
    • T. Satoh, Chem. Rev. 1996, 96, 3303-3325
    • (1996) Chem. Rev. , vol.96 , pp. 3303-3325
    • Satoh, T.1
  • 15
    • 14844336389 scopus 로고    scopus 로고
    • Tetrahedron 2005, 61, 3251-3260
    • (2005) Tetrahedron , vol.61 , pp. 3251-3260
  • 27
    • 25844477438 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2005, 44, 6169-6172.
    • (2005) Angew. Chem. Int. Ed. , vol.44 , pp. 6169-6172
  • 34
    • 79954596078 scopus 로고    scopus 로고
    • CCDC-755643 contains the supplementary crystallographic data for (S,S,R)- 10c. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via
    • CCDC-755643 contains the supplementary crystallographic data for (S,S,R)- 10c. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre via.
  • 35
    • 79954592448 scopus 로고    scopus 로고
    • The presence of slowly equilibrating nitrogen invertomers has been already observed for other 2,2-disubstituted oxazolinylaziridines (see reference [10])
    • The presence of slowly equilibrating nitrogen invertomers has been already observed for other 2,2-disubstituted oxazolinylaziridines (see reference [10]).
  • 36
    • 79954609342 scopus 로고    scopus 로고
    • For examples of reactivity in conformationally mobile systems, see
    • For examples of reactivity in conformationally mobile systems, see
  • 45
    • 79954568664 scopus 로고    scopus 로고
    • The Supporting Information reports the stereochemical analysis in different solvents for other oxazolinylaziridines
    • The Supporting Information reports the stereochemical analysis in different solvents for other oxazolinylaziridines.
  • 46
    • 84855618111 scopus 로고    scopus 로고
    • 1H NMR spectra of several oxazolinylaziridines disclosed that protons that are set in a cis relationship with respect to the oxazolinyl group are always more deshielded
    • 1H NMR spectra of several oxazolinylaziridines disclosed that protons that are set in a cis relationship with respect to the oxazolinyl group are always more deshielded.
  • 47
    • 79954593304 scopus 로고    scopus 로고
    • It has been hypothesized that a complex-induced proximity effect (CIPE) could be operative, see
    • It has been hypothesized that a complex-induced proximity effect (CIPE) could be operative, see
  • 49
  • 52
    • 34250743188 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2007, 46, 4566-4569.
    • (2007) Angew. Chem. Int. Ed. , vol.46 , pp. 4566-4569
  • 53
    • 79954573908 scopus 로고    scopus 로고
    • The nitrogen atom is a center of chirality in slowly equilibrating invertomers
    • The nitrogen atom is a center of chirality in slowly equilibrating invertomers.
  • 58
    • 84855618112 scopus 로고    scopus 로고
    • 1H NMR spectra
    • 1H NMR spectra.
  • 68
    • 33751437305 scopus 로고    scopus 로고
    • The capability of the oxazoline nitrogen atom to bind the lithium ion has been demonstrated also for other organolithium derivatives, see
    • The capability of the oxazoline nitrogen atom to bind the lithium ion has been demonstrated also for other organolithium derivatives, see:, K. L. Jantzi, I. A. Guzei, H. J. Reich, Organometallics 2006, 25, 5390-5395.
    • (2006) Organometallics , vol.25 , pp. 5390-5395
    • Jantzi, K.L.1    Guzei, I.A.2    Reich, H.J.3
  • 71
    • 79954606277 scopus 로고    scopus 로고
    • The roles of aggregation phenomena and solvation are being evaluated computationally and experimentally on more simple N-alkyloxazolinylaziridines, and the results will be reported in due course
    • The roles of aggregation phenomena and solvation are being evaluated computationally and experimentally on more simple N-alkyloxazolinylaziridines, and the results will be reported in due course.
  • 73
    • 79954603932 scopus 로고    scopus 로고
    • The proposed model assumes that oxazolinylaziridines can break down nBuLi aggregates; the importance of the aggregation/reactivity relationship has been highlighted recently, see
    • The proposed model assumes that oxazolinylaziridines can break down nBuLi aggregates; the importance of the aggregation/reactivity relationship has been highlighted recently, see
  • 76
    • 36049007105 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2007, 46, 8281-8283.
    • (2007) Angew. Chem. Int. Ed. , vol.46 , pp. 8281-8283
  • 77
    • 11844285688 scopus 로고    scopus 로고
    • A double inversion has been also suggested for the epimerization of lithiated pyrrolidines that occurs at high temperature, see.
    • A double inversion has been also suggested for the epimerization of lithiated pyrrolidines that occurs at high temperature, see:, N. J. Ashweek, P. Brandt, I. Coldham, S. Dufour, R. E. Gawley, F. R. Haeffner Klein, G. Sanchez-Jimenez, J. Am. Chem. Soc. 2005, 127, 449-457.
    • (2005) J. Am. Chem. Soc. , vol.127 , pp. 449-457
    • Ashweek, N.J.1    Brandt, P.2    Coldham, I.3    Dufour, S.4    Gawley, R.E.5    Haeffner Klein, F.R.6    Sanchez-Jimenez, G.7
  • 78
    • 0036713898 scopus 로고    scopus 로고
    • 13C NMR spectrum shows the signals of two quaternary carbons at Î=96-97 ppm, which belong to the C2 of the oxazolidine ring, and the absence of the oxazoline C=N signal usually found at around Î=160 ppm; examples of related structures have been reported, see.
    • 13C NMR spectrum shows the signals of two quaternary carbons at Î=96-97 ppm, which belong to the C2 of the oxazolidine ring, and the absence of the oxazoline C=N signal usually found at around Î=160 ppm; examples of related structures have been reported, see:, V. Capriati, L. Degennaro, S. Florio, R. Luisi, Eur. J. Org. Chem. 2002, 2961-2969.
    • (2002) Eur. J. Org. Chem. , pp. 2961-2969
    • Capriati, V.1    Degennaro, L.2    Florio, S.3    Luisi, R.4
  • 79
    • 79954613447 scopus 로고    scopus 로고
    • Nucleophilic addition to the oxazoline C=N bond is reported to occur with O nucleophiles, see
    • Nucleophilic addition to the oxazoline C=N bond is reported to occur with O nucleophiles, see
  • 84
    • 23044473699 scopus 로고    scopus 로고
    • The addition of alkyllithium compounds to the oxazoline C=N bond is quite a difficult process, see:,; however, when the peculiar proximity effect is realized for stereochemical reasons this type of addition could be feasible, see
    • The addition of alkyllithium compounds to the oxazoline C=N bond is quite a difficult process, see:, A. I. Meyers, J. Org. Chem. 2005, 70, 6137-6151; however, when the peculiar proximity effect is realized for stereochemical reasons this type of addition could be feasible, see
    • (2005) J. Org. Chem. , vol.70 , pp. 6137-6151
    • Meyers, A.I.1
  • 86
  • 87
    • 79954623685 scopus 로고    scopus 로고
    • With reference to the C=N addition reaction, it is worth noting that the major invertomer would produce unreactive complexes with nBuLi because of the anti relationship between the oxazoline ring and the lone pair of electrons on the aziridine nitrogen atom
    • With reference to the C=N addition reaction, it is worth noting that the major invertomer would produce unreactive complexes with nBuLi because of the anti relationship between the oxazoline ring and the lone pair of electrons on the aziridine nitrogen atom.
  • 88
    • 79954572070 scopus 로고    scopus 로고
    • The synthetic procedures and spectral characterization data for the prepared compounds are given in the Supporting information for this article, which is available on the WWW under http://www. chemeurj.org/or from the author
    • The synthetic procedures and spectral characterization data for the prepared compounds are given in the Supporting information for this article, which is available on the WWW under http://www. chemeurj.org/or from the author.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.