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Volumn 28, Issue 2, 2007, Pages 325-328

N-methyl pseudoephedrine-mediated asymmetric syntheses of dihydroquinoxalinones for the preparation of flavane analogues

Author keywords

Asymmetric syntheses; Chiral auxiliary; Dihydroquinoxalinone; Dynamic resolution; Flavonoids; Nucleophilic substitution

Indexed keywords


EID: 33847338943     PISSN: 02532964     EISSN: 12295949     Source Type: Journal    
DOI: 10.5012/bkcs.2007.28.2.325     Document Type: Article
Times cited : (12)

References (31)
  • 4
    • 33847380660 scopus 로고    scopus 로고
    • Both (S,S)- and (R,R)-N-methyl pseudoephedrine are commercially available and also can be easily prepared by N-methylation of pseudoephedrine with formaldehyde and formic acid.
    • Both (S,S)- and (R,R)-N-methyl pseudoephedrine are commercially available and also can be easily prepared by N-methylation of pseudoephedrine with formaldehyde and formic acid.
  • 13
    • 33845336096 scopus 로고    scopus 로고
    • For reviews on dynamic thermodynamic resolution, see: a
    • For reviews on dynamic thermodynamic resolution, see: (a) Kim, Y.; Shin, E.-k.; Beak, P.; Park, Y. S. Synthesis 2006, 3805.
    • (2006) Synthesis , pp. 3805
    • Kim, Y.1    Shin, E.-K.2    Beak, P.3    Park, Y.S.4
  • 18
    • 33847348071 scopus 로고    scopus 로고
    • In references 1a-c, we have established that (R)-products were provided in the substitution of N-methyl pseudoephedrine α-bromo esters with various nucleophiles. The absolute configurations of dihydroquinoxalinones 3-9 are provisionally assigned by analogy
    • In references 1a-c, we have established that (R)-products were provided in the substitution of N-methyl pseudoephedrine α-bromo esters with various nucleophiles. The absolute configurations of dihydroquinoxalinones 3-9 are provisionally assigned by analogy.
  • 19
    • 33646758906 scopus 로고    scopus 로고
    • For reviews on TBAI (or TBAB) promoted epimerization of α-halo esters or amides, see: (a) Kim, H. J.; Kim, Y.; Choi, E. T.; Lee, M. H.; No, E. S.; Park, Y. S. Tetrahedron 2006, 62, 6303.
    • For reviews on TBAI (or TBAB) promoted epimerization of α-halo esters or amides, see: (a) Kim, H. J.; Kim, Y.; Choi, E. T.; Lee, M. H.; No, E. S.; Park, Y. S. Tetrahedron 2006, 62, 6303.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.