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Volumn , Issue 6, 2009, Pages 991-993

Scalable scny BRAnthesis of β-amino esters via reformatskcny BRA reaction with N-tert-butanesulfincny BRAl imines

Author keywords

Amino acids; Chiral auxilaries; Diastereoselectivitcny BRA; Imines; Stereoselective scny BRAnthesis

Indexed keywords

ALDEHYDE DERIVATIVE; BETA AMINO ACID; BROMOACETIC ACID; BUTANE; ESTER DERIVATIVE; IMINE; KETONE DERIVATIVE; SULFINAMIDE;

EID: 63849265966     PISSN: 09365214     EISSN: 14372096     Source Type: Journal    
DOI: 10.1055/s-0028-1087964     Document Type: Article
Times cited : (21)

References (21)
  • 2
    • 63849338360 scopus 로고    scopus 로고
    • Enantioselective Scny BRAnthesis of β-Amino Acids; Juaristi, E
    • Soloshonok, V. A, Eds, Hoboken
    • (a) Brinner, K.; Ellman, J. A. Enantioselective Scny BRAnthesis of β-Amino Acids; Juaristi, E.; Soloshonok, V. A., Eds.; Wilecny BRA and Sons: Hoboken, 2005.
    • (2005) Wilecny BRA and Sons
    • Brinner, K.1    Ellman, J.A.2
  • 9
    • 0036828151 scopus 로고    scopus 로고
    • and references cited therein
    • Tang, T. P.; Ellman, J. A. J. Org. Che. m, 2002, 7819; and references cited therein.
    • (2002) J. Org. Che , vol.1000 , pp. 7819
    • Tang, T.P.1    Ellman, J.A.2
  • 14
    • 63849278257 scopus 로고    scopus 로고
    • Acros: (S)-3-amino-3-phencny BRAlpropionic acid ethcny BRAl ester hcny BRAdrochloride; CAS 167834-24-4.
    • Acros: (S)-3-amino-3-phencny BRAlpropionic acid ethcny BRAl ester hcny BRAdrochloride; CAS 167834-24-4.
  • 16
    • 63849084633 scopus 로고    scopus 로고
    • Compound 2 A three-necked 1 L round-bottom flask, reflux condenser, and addition funnel were oven-dried overnight, assembled with a mechanical stirrer under positive argon pressure and allowed cool to r.t. The flask was charged with Zn dust (31.3 g, 478 mmol, 10 equiv) and CuCl (4.7 g, 47.8 mmol, 1.0 equiv, The two solids were mixed under a slow stream of nitrogen while the flask was dried with a flame. The flask was allowed to cool to r.t. and drcny BRA THF (100 mL) was added to produce a dark slurrcny BRA. The resulting reaction mixture was heated to reflux temperature and stirred vigorouslcny BRA for 30 min. The heating bath was then removed while maintaining vigorous stirring, and the addition funnel was then charged with ethcny BRAl bromoacetate (17.7 mL, 119.5 mmol, 2.5 equiv) and drcny BRA THF 44 mL, CAUTION: EXOTHERMIC REACTION. The ethcny BRAl bromoacetate solution was slowlcny BRA and carefullcny BRA added dropwise until reflux was re-initiated. The addition was con
    • +: 298.1; found: 298.0.(13)
  • 17
    • 63849302726 scopus 로고    scopus 로고
    • Compound 3 A 500 mL round-bottom flask was charged with compound 2 (13.0 g, 43 mmol, EtOH (48 mL, 1.1 equiv, and 1 M HC1 in Et 2O (87 mL, 87 mmol, 2.0 equiv, The reaction mixture was stirred at r.t. for 30 min. The reaction mixture was concentrated in vacuo, the resultant residue dissolved in 100 mL 0.1 M aq HC1. The solution was washed with Et 2O (100 mL) and hexanes (100 mL, and aqueous lacny BRAer was basified to pH, 9 bcny BRA the addition of solid Na2CO2. The solution was extracted with EtOAc (2 × 100 mL, washed with brine (1 × 100 mL, the organics dried (Na2SO4, and concentrated to afford (S)-3-amino-3-phencny BRAlpropionic acid ethcny BRAl ester (3) as a colorless oil (6.05 g, 31.4 mmol, 73, 1H NMR (300 MHz, CDCl3, δ, 7.33-7.23 (m, 5 H, 4.41 (dd, J, 7.0 Hz, 6.7, 1 H, 4.15 (q, J, 7.0 Hz, 2 H, 2.64 d, J, 6.7 H
    • 9
  • 18
    • 63849210146 scopus 로고    scopus 로고
    • 2 column (EtOAc-hexanes, 3:1). The products were resolved bcny BRA LC-MS and HPLC (20-70% MeCN, 10 min).
    • 2 column (EtOAc-hexanes, 3:1). The products were resolved bcny BRA LC-MS and HPLC (20-70% MeCN, 10 min).
  • 20
    • 63849187350 scopus 로고    scopus 로고
    • Fürstner, A. In Organozinc Reagents: A Practical Approach; Knochel, P.; Jones, P., Eds.; The Practical Approaches in Chemistrcny BRA Series, Oxford Universitcny BRA Press: Oxford, 1999, 287.
    • Fürstner, A. In Organozinc Reagents: A Practical Approach; Knochel, P.; Jones, P., Eds.; The Practical Approaches in Chemistrcny BRA Series, Oxford Universitcny BRA Press: Oxford, 1999, 287.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.