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Volumn 69, Issue 10, 2004, Pages 3330-3335

Stereospecific Synthesis of Optically Active Phenylpropylene Oxides

Author keywords

[No Author keywords available]

Indexed keywords

ALCOHOLS; AROMATIC COMPOUNDS; STEREOCHEMISTRY; SYNTHESIS (CHEMICAL);

EID: 2442515215     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo035858w     Document Type: Article
Times cited : (35)

References (53)
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    • For some recent reviews on oxiranyl anions, see: (a) Satoh, T. Chem. Rev. 1996, 96, 3303-3325.
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    • Satoh, T.1
  • 19
    • 0242475011 scopus 로고    scopus 로고
    • Oxiranyl and aziridinyl anions as reactive intermediates in synthetic organic chemistry
    • (d) Florio, S., Ed. Oxiranyl and aziridinyl anions as reactive intermediates in synthetic organic chemistry. Tetrahedron 2003, 59, 9683-9864.
    • (2003) Tetrahedron , vol.59 , pp. 9683-9864
    • Florio, S.1
  • 30
    • 2442443990 scopus 로고    scopus 로고
    • note
    • 3), respectively.
  • 31
    • 85047699456 scopus 로고    scopus 로고
    • (b) Having used up to 3 equiv of s-BuLi and in consideration of the fact that unactivated epoxides can also undergo direct deprotonation (s-BuLi/TMEDA) to give destabilized oxiranyllithiums (Hodson, D. M.; Gras, E. Angew Chem., Int. Ed. 2002, 41, 2376-2378), we also checked enantiomeric purity of an the chiral nonracemic substituted phenylpropylene oxides synthesized, even if the dr would have been sufficient to ascertain the configurational stability of their lithiated precursors.
    • (2002) Angew Chem., Int. Ed. , vol.41 , pp. 2376-2378
    • Hodson, D.M.1    Gras, E.2
  • 36
    • 0001753604 scopus 로고
    • (a) Crandall, J. K.; Lin, L.-H. C. J. Am. Chem. Soc. 1967, 89, 4526-4527; (b) 1967, 89, 4527-4528.
    • (1967) J. Am. Chem. Soc. , vol.89 , pp. 4527-4528
  • 39
    • 2442529632 scopus 로고    scopus 로고
    • note
    • (e) An NMR-spectroscopic study on lithiated phenylpropylene oxides is under way and will be reported in due course.
  • 40
    • 0030665236 scopus 로고    scopus 로고
    • The preparation of only a mixture of the optically active trans- and cis-epoxides 3b/3f has been reported till now: Wang, Z.-X.; Tu, Y.; Frohn, M.; Zhang, J.-R.; Shi, Y. J. Am. Chem. Soc. 1997, 119, 11224-11235.
    • (1997) J. Am. Chem. Soc. , vol.119 , pp. 11224-11235
    • Wang, Z.-X.1    Tu, Y.2    Frohn, M.3    Zhang, J.-R.4    Shi, Y.5
  • 43
    • 2442479442 scopus 로고    scopus 로고
    • note
    • The convention employed for describing syn and anti diastereomers is as follows: if the main chain is written in an extended (zigzag) conformation, the diastereomer that has the oxiranyl ring and the hydroxy group both projecting either forward (bold bonds) or away from the viewer (dashed bonds) is called syn.
  • 44
    • 2442601232 scopus 로고    scopus 로고
    • CCDC-232045 contains the supplementary crystallographic data for compound (±)-3j. These data can be obtained free of charge at www.ccdc.ac.uk/conts/retrieving.html or from the Cambridge Crystallographic Data Centre, 12, Union Road, Cambridge CB2 1EZ, UK.; Fax: (int) +44-1223/336-033; E-mail: deposit@ccdc.cam.ac.uk.
  • 47
    • 0035965107 scopus 로고    scopus 로고
    • For a recent review on epoxy ketones as versatile building blocks in organic synthesis, see: Lauret, C. Tetrahedron: Asymmetry 2001, 12, 2359-2383.
    • (2001) Tetrahedron: Asymmetry , vol.12 , pp. 2359-2383
    • Lauret, C.1
  • 51
    • 2442552784 scopus 로고    scopus 로고
    • note
    • α-C=O bond. To introduce electron correlation in the computation of the energetics, the two local minimum-energy conformers found (corresponding just to those represented in Scheme 4 with the phenyl ring perpendicular to the C=O moiety) were subjected to single-point calculations using the density functional theory (DFT) at the B3LY/6-31 + G*/PM3 level of theory: the conformer having the oxiranyl oxygen anti to the C=O group, predicted to be the more reactive one, also resulted to be the more stable one of about 3.7 kca1/mol.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.