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Volumn 48, Issue 48, 2007, Pages 8526-8530

Asymmetric crystallization of bisguanidinobenzene derivatives

Author keywords

Asymmetric crystallization; CD; Guanidine; X ray diffraction

Indexed keywords

ALEXIDINE; BENZENE DERIVATIVE; BISGUANIDINOBENZENE DERIVATIVE; UNCLASSIFIED DRUG;

EID: 35649024856     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2007.09.144     Document Type: Article
Times cited : (5)

References (34)
  • 23
    • 35649010649 scopus 로고    scopus 로고
    • note
    • The chiral crystals were obtained by complexation of bisguanidinobenzene 1 and (2S,3S)-(+)-O,O′-dibenzoyltartaric acid. In these crystals, only one enantiomer of the trans form of 1 exists. Surprisingly, the chiral crystal was also obtained from the complex of 1 and achiral benzoic acid and water. In these crystals, the complex formed a helical supermolecule carrying only the trans enantiomer of 1. The chirality disappeared when the crystal was dissolved in a solvent. These results will be reported elsewhere in the near future.
  • 28
    • 35648929623 scopus 로고    scopus 로고
    • note
    • Details of the crystal structure analyses are provided as Supplementary data. CCDC 654529 (1), CCDC 654532 (2a), CCDC 654536 (P-2b), CCDC 654531 (M-2b), CCDC 654530 (M-2c recrystallized from MeOH), CCDC 654535 (P-2c), CCDC 654534, (M-2c), and CCDC 654533 (2d) contain the supplementary crystallographic data for this Letter. These data can be obtained free of charge from the Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif.
  • 30
    • 35649001704 scopus 로고    scopus 로고
    • note
    • Attempts to synthesize dialkylated bisguanidinobenzene were not successful. Treatment of N,N′-dimethyl-o-diaminobenzene with 4 afforded an undesired product through intermolecular reactions.
  • 32
    • 0000817728 scopus 로고
    • From dynamic studies on guanidines, it is known that both the C{double bond, long}N and Ar-N bonds rapidly rotate at rt. See:
    • From dynamic studies on guanidines, it is known that both the C{double bond, long}N and Ar-N bonds rapidly rotate at rt. See:. Kessler H., and Leibfritz D. Tetrahedron Lett. 6 (1969) 427
    • (1969) Tetrahedron Lett. , vol.6 , pp. 427
    • Kessler, H.1    Leibfritz, D.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.