메뉴 건너뛰기




Volumn 53, Issue 46, 2012, Pages 6199-6201

Cobalt-catalyzed alkyne-dihalomethane-amine coupling: An efficient route for propargylamines

Author keywords

Alkynes; Amines; Cobalt; Dihalomethane; Propargylamines

Indexed keywords

ALKANE DERIVATIVE; ALKYNE; AMINE; CARBON; COBALT; COBALT BROMIDE; COBALT COMPLEX; DIHALOMETHANE; FUNCTIONAL GROUP; HALOGEN; HYDROGEN; LIGAND; ORGANONITROGEN DERIVATIVE; PHOSPHINE; UNCLASSIFIED DRUG;

EID: 85027918369     PISSN: 00404039     EISSN: 18733581     Source Type: Journal    
DOI: 10.1016/j.tetlet.2012.08.136     Document Type: Article
Times cited : (23)

References (49)
  • 23
    • 0000814758 scopus 로고
    • Trost B.M. Fleming I. Paquette L. A. Eds.; Pergamon Press: Oxford
    • Schore, N. E. In Comprehensive Organic Synthesis; Trost, B. M., Fleming, I., Paquette, L. A., Eds.; Pergamon Press: Oxford, 1991; Vol. 5, pp 1129-1162.
    • (1991) Comprehensive Organic Synthesis , vol.5 , pp. 1129-1162
    • Schore, N.E.1
  • 24
    • 0000134376 scopus 로고
    • Abel E. W. Stone F. G. A. Wilkinson G. Hegedus L. Eds.; Pergamon Press: Oxford
    • Grotjahn, D. B. In Comprehensive Organometallic Chemistry II; Abel, E. W., Stone, F. G. A., Wilkinson, G., Hegedus, L., Eds.; Pergamon Press: Oxford, 1995; Vol. 12, pp 741-770.
    • (1995) Comprehensive Organometallic Chemistry II , vol.12 , pp. 741-770
    • Grotjahn, D.B.1
  • 31
    • 0001203075 scopus 로고
    • For recent examples on cobalt-catalyzed [2+2+2] cyclotrimerization see
    • Grotjahn, D. B.; Vollhardt, K. P. C. J. Am. Chem. Soc. 1986, 108, 2091; For recent examples on cobalt-catalyzed [2+2+2] cyclotrimerization see:
    • (1986) J. Am. Chem. Soc , vol.108 , pp. 2091
    • Grotjahn, D.B.1    Vollhardt, K.P.C.2
  • 38
    • 0003002270 scopus 로고
    • For a recent review on the application of Nicholas reaction
    • Nicholas, K. M.; Pettit, R. J. Organomet. Chem. 1972, 44, C21; For a recent review on the application of Nicholas reaction:
    • (1972) J. Organomet. Chem , vol.44
    • Nicholas, K.M.1    Pettit, R.2
  • 49
    • 85028120508 scopus 로고    scopus 로고
    • Representative Experimental Procedure For Cobalt-catalyzed Three-component Coupling Of Alkynes Dihaloalkanes And Amines. Synthesis Of 4a: CoBr2 (10.9 Mg 10 Mol %) And DBU (152 Mg 1 Mmol) Were Suspended In CH3CN (2 ML) In A 5 ML Schlenk Tube Under Nitrogen. And Then Phenylacetylene (51 Mg 0.5 Mmol) Dichloromethane (126 Mg 1.5 Mmol) And Diethylamine (109.5 Mg 1.5 Mmol) Were Added Via Syringe. The Resulting Solution Was Stirred At 80 -C For 24 H. After Cooling To Room Temperature The Resulting Mixture Was Filtered Through A Short Path Of Silica Gel Eluting With Dichloromethane. The Volatile Compounds Were Removed In Vacuo And The Residue Was Purified By Column Chromatography (SiO2 Hexaneethyl Acetate = 10:1) To Give 4a As A Colourless Oil (79.5 Mg 85%).1H NMR (300 MHz CDCl3) D 7.43-7.40 (m, 2H), 7.30-7.25 (m, 3H), 3.68 (s, 2H), 2.68 (q, J = 7.2 Hz, 4H), 1.16 ( t, J = 7.2 Hz, 6H); 13C NMR (75 MHz, CDCl3): d = 131.8, 128.3, 128.0, 123.5, 85.3, 84.5, 476 41.8, 12.9 ppm
    • Representative experimental procedure for cobalt-catalyzed three-component coupling of alkynes, dihaloalkanes, and amines. Synthesis of 4a: CoBr2 (10.9 mg, 10 mol %) and DBU (152 mg, 1 mmol) were suspended in CH3CN (2 mL) in a 5 mL schlenk tube under nitrogen. And then phenylacetylene (51 mg, 0.5 mmol), dichloromethane (126 mg, 1.5 mmol), and diethylamine (109.5 mg, 1.5 mmol) were added via syringe. The resulting solution was stirred at 80 -C for 24 h. After cooling to room temperature, the resulting mixture was filtered through a short path of silica gel, eluting with dichloromethane. The volatile compounds were removed in vacuo and the residue was purified by column chromatography (SiO2, hexane/ethyl acetate = 10:1) to give 4a as a colourless oil (79.5 mg, 85%).1H NMR (300 MHz, CDCl3) d 7.437.40 (m, 2H), 7.307.25 (m, 3H), 3.68 (s, 2H), 2.68 (q, J = 7.2 Hz, 4H), 1.16 (t, J = 7.2 Hz, 6H); 13C NMR (75 MHz, CDCl3): d = 131.8, 128.3, 128.0, 123.5, 85.3, 84.5, 47.6, 41.8, 12.9 ppm.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.