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Volumn 34, Issue 33, 1993, Pages 5265-5268

Palladium catalyzed coupling reactions of 2,3-dihydrofuran using high pressure conditions

Author keywords

[No Author keywords available]

Indexed keywords

FURAN DERIVATIVE;

EID: 0027301643     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(00)73969-4     Document Type: Article
Times cited : (39)

References (21)
  • 8
    • 1542540752 scopus 로고
    • Reaktionsdynamik in der Chemie von Koordinationsverbindungen - Anwendung von Hochdruck-Techniken
    • For excellent reviews on coordination chemistry under high pressure conditions see
    • (1986) Angewandte Chemie , vol.98 , pp. 671-680
    • Eldik1
  • 11
    • 0001324836 scopus 로고
    • Inter- and intramolecular hetero diels-alder reactions, 40. Effect of high pressure on the stereoselectivity of intermolecular hetero diels-alder reactions
    • Leading references on pressure induced selectivity
    • (1992) Chemische Berichte , vol.125 , pp. 2249-2258
    • Tietze1    Hübsch2    Oelze3    Ott4    Tost5    Wörner6    Buback7
  • 12
    • 0000472096 scopus 로고
    • Inter- and Intramolecular Hetero Diels-Alder Reactions, Part XXVI. Diastereoselectivity and Kinetics of Intermolecular Hetero Diels-Alder Reactions under High Pressure. A Significant Pressure-Induced Increase in Stereoselectivity
    • (1989) Chemische Berichte , vol.122 , pp. 1179-1186
    • Buback1    Tost2    Hübsch3    Voß4    Tietze5
  • 14
    • 84918741447 scopus 로고    scopus 로고
    • 2 (6.7 mg, 30 μmol), triphenylphosphine (31 mg, 120 μmol), and diisopropylethylamine (380 mg, 3.0 mmol) in 15 ml THF / acetonitrile (1:1) were stirred at r.t. for 20 min. Subsequently, to 1.5 ml of this catalyst solution a solution of iodobenzene (2-I) (20 mg, 0.1 mmol) and 2,3-dihydrofuran (1) (35 mg, 0.5 mmol) in 500 μl THF / acetonitrile (1:1) were added. The solution was divided into two equal volumes, one part was heated at 60°C for 70 h at normal pressure, the other part was sealed in a Teflon tube and heated at 60°C for 70 h at a pressure of 10 kbar. The mixtures were filtrated on 0.5 g silica gel (ether) and analyzed by capillary GC.
  • 15
    • 84918717355 scopus 로고    scopus 로고
    • The procedure given in Note 6 has been scaled up by a factor of 50 (in 20 ml solvent) for selected cases leading to identical results.
  • 16
    • 84918743494 scopus 로고    scopus 로고
    • At normal pressure 3 can only be selectively formed by the addition of 2 equivalents of silver salts: cf. Ref. 2.
  • 20
    • 84918753356 scopus 로고    scopus 로고
    • The enantiomeric excess was determined by GC using a 6-methyl-2,3-pentyl-β-cyclodextrine column.
  • 21
    • 84918727180 scopus 로고    scopus 로고
    • Procedure cf. Ref. 5: Instead of triphenylphosphine (R)-BINAP (3.7 mg, 6 μmol) and instead of 2-I 2-ONf (39 mg, 0.1 mmol) were used.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.