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Volumn , Issue 1, 2007, Pages 63-66

A gold(III)-catalyzed double Wacker-type reaction of 1,1-diethynyl acetate

Author keywords

1,1 diethynyl acetates; Catalyst; Double Wacker type reaction; Gold; Platinum

Indexed keywords

1,1 DIETHYNYL ACETATE; ACETIC ACID DERIVATIVE; ACETYLENE DERIVATIVE; GOLD; OXYGEN; PLATINUM; UNCLASSIFIED DRUG;

EID: 33846560312     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2006-956497     Document Type: Article
Times cited : (15)

References (40)
  • 2
    • 2942557280 scopus 로고    scopus 로고
    • For recent reviews, see: b
    • For recent reviews, see: (b) Nakamura, I.; Yamamoto, Y. Chem. Rev. 2004, 104, 2127.
    • (2004) Chem. Rev , vol.104 , pp. 2127
    • Nakamura, I.1    Yamamoto, Y.2
  • 9
  • 11
    • 33751500525 scopus 로고    scopus 로고
    • Hydration of alkynes: (a) Fukuda, Y.; Utimoto, K. J. Org. Chem. 1991, 56, 3729.
    • Hydration of alkynes: (a) Fukuda, Y.; Utimoto, K. J. Org. Chem. 1991, 56, 3729.
  • 15
    • 33748354885 scopus 로고    scopus 로고
    • For recent examples of intramolecular cyclizations, see: e
    • For recent examples of intramolecular cyclizations, see: (e) Liu, Y.; Song, F.; Guo, S. J. Am. Chem. Soc. 2006, 128, 11332.
    • (2006) J. Am. Chem. Soc , vol.128 , pp. 11332
    • Liu, Y.1    Song, F.2    Guo, S.3
  • 21
    • 3242691284 scopus 로고    scopus 로고
    • 1,2-Migration of acyl group: (a) Mamane, V.; Gress, T.; Krause, H.; Fürstner, A. J. Am. Chem. Soc. 2004, 126, 8654.
    • 1,2-Migration of acyl group: (a) Mamane, V.; Gress, T.; Krause, H.; Fürstner, A. J. Am. Chem. Soc. 2004, 126, 8654.
  • 39
    • 33846555755 scopus 로고    scopus 로고
    • Preparation of Substrates 2; General Procedure: To a solution of trimethylsilyl acetylene (3.32 g, 33.8 mmol) in THF (30 mL) under Ar was added n-BuLi (13.0 mL of 2.6 M in hexane, 33.8 mmol) at -78 °C and the mixture was stirred for 0.5 h at 0 ° C. After the solution was cooled to -78 °C, the corresponding ester 1 (11.3 mmol) in THF (3 × 8 mL) was slowly added dropwise. The mixture was stirred at -10 °C for 12 h and quenched with H2O (80 mL) and EtOAc (80 mL, The organic layers were separated, the aqueous layer was extracted with EtOAc (50 mL, and combined organic layers were dried with MgSO4 and concentrated in vacuo. To a solution of the crude product in THF (30 mL) was added TBAF (22.4 mL of 1 M in THF, 22.4 mmol) and the mixture was stirred for 0.5 h at r.t. The mixture was diluted with H2O (80 mL) and EtOAc (80 mL, The organic layers were separated, the aqueous layer was extracted with EtOAc 2 × 50 mL
    • 2: C, 79.62; H, 6.24
  • 40
    • 33846548728 scopus 로고    scopus 로고
    • Reaction of 2; General Procedure: A 20-mL round-bottomed flask, containing a magnetic stirring bar, catalyst (0.015 mmol, 2 (0.3 mmol) and MeOH (5 mL) was fitted with a Dimroth condenser capped with a rubber septum. After being stirred for a certain period at 60 °C, the mixture was diluted with EtOAc (20 mL) and washed with aq 3% NaHCO3 (20 mL, The organic layers were separated, the aqueous layer was extracted with EtOAc (30 mL, and combined organic layers were dried with MgSO4 and concentrated in vacuo. The crude product was purified by column chromatography on silica gel. The fraction eluted with hexane-EtOAc(100:1-50:1 and 10:1) afforded 3 and 4, respectively. 3a: colorless oil. 1H NMR (CDCl 3, δ, 1.69-1.78 (m, 1 H, 1.91-2.00 (m, 1 H, 2.22 (s, 3 H, 2.43 (dd, J, 4.4, 16.8 Hz, 1 H, 2.58-2.62 (m, 2 H, 2.80 (dd, J, 9.6, 16.8 Hz, 1 H, 2.99-3.07 (m, 1 H, 3.66 s, 3 H, 7.15
    • -1.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.