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Volumn 5, Issue 16, 2003, Pages 2781-2784

Variable ion selectivity in [n.3.3](1,3,5)crownophanes: The "breathing" process

Author keywords

[No Author keywords available]

Indexed keywords

ALKANE DERIVATIVE; CESIUM; DITHIA[3.3]METACYCLOPHANE; UNCLASSIFIED DRUG;

EID: 0141855306     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol034424k     Document Type: Article
Times cited : (18)

References (36)
  • 26
    • 0141512651 scopus 로고    scopus 로고
    • note
    • A dimeric product was also isolated. This will be published elsewhere.
  • 27
    • 0141847262 scopus 로고    scopus 로고
    • note
    • General Synthetic Procedure for 4a-c. A solution of sodium sulfide nonahydrate (480 mg, 2.0 mmol) and cesium carbonate (652 mg, 2.0 mmol) in 95% ethanol (300 mL) and a solution of tetrabromide 3 (1.0 mmol) in benzene (300 mL) in separate rotaflow dropping funnels were added dropwise simultaneously at the same rate to nitrogen purged 95% ethanol (1 L). After the addition, the mixture was stirred overnight and the bulk of the solvent was removed under reduced pressure. Water and dichloromethane were added to the residue, and the mixture was stirred until all solids were dissolved. The organic layer was separated, dried, and evaporated. The residue was chromatographed on silica gel using ethyl acetate/hexane (1:4 and then 3:7) as the eluent.
  • 28
    • 0141623907 scopus 로고    scopus 로고
    • note
    • 2: C, 66.89; H, 7.62. Found: C, 67.07; H, 7.78.
  • 29
    • 0141623908 scopus 로고    scopus 로고
    • note
    • 2: C, 65.90; H, 7.74. Found: C, 66.03; H, 7.54.
  • 30
    • 0141623909 scopus 로고    scopus 로고
    • note
    • 2: C, 65.05; H, 7.85. Found: C, 64.93; H, 8.02.
  • 35
    • 0141512650 scopus 로고    scopus 로고
    • note
    • The cavity diameter was estimated by averaging the difference between the diagonal distance of two oxygen atoms and the van der Waals diameter of an oxygen atom (2.80 Å).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.