A highly active ytterbium(III) methide complex for truly catalytic Friedel-Crafts acylation reactions

Synlett

Volumn , Issue 10, 2002, Pages 1653-1656

  Barrett, Anthony G M ^a   Bouloc, Nathalie ^a   Braddock, D Christopher ^a   Chadwick, David ^b   Henderson, David A ^a  

^a Technology and Medicine   (United Kingdom)

^b IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

Acylation; Catalytic; Friedel Crafts; Inhibition; Ytterbium(III) methide

Indexed keywords

ACETIC ANHYDRIDE; ANISOLE; YTTERBIUM;

ACYLATION; ARTICLE; CATALYSIS; CATALYST; CHEMICAL REACTION KINETICS; PRESSURE; REACTION ANALYSIS; TEMPERATURE DEPENDENCE;

EID: 0036399737     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2002-34231     Document Type: Article

References (21)

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11. Waller, F. J.; Barrett, A. G. M.; Braddock, D. C.; Ramprasad, D.; McKinnell, R. M.; White, J. P.; Williams, D. J.; Ducray, R. J. Org. Chem. 1999, 64, 2910.
12. Barrett, A. G. M.; Braddock, D. C.; Ducray, R.; McKinnell, R. M.; Waller, F. J. Synlett 2000, 57.
13. (a) Barrett, A. G. M.; Braddock, D. C.; Catterick, D.; Chadwick, D.; Henschke, J. P.; McKinnell, R. M. Synlett 2000, 847.
14. (b) Barrett, A. G. M.; Bouloc, N.; Braddock, D. C.; Catterick, D.; Chadwick, D.; White, A. J. P.; Williams, D. J. Tetrahedron 2002, 58, 3835.
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18. For experimental details for the preparation of these complexes see: Barrett, A. G. M.; Bouloc, N.; Braddock, D. C.; Catterick, D.; Chadwick, D.; White, A. J. P.; Williams, D. J. Tetrahedron 2002, 58, 3835.
19. These plots were obtained using a Mettler-Toledo REACTIR 4000 system with a dicomp probe scanning every 60 s (25 °C, 50 °C) or 45 s (70 °C) for the first two hours followed by one scan every five min for the remaining time. The profiles are generated by following the peak area between 1672 and 1685 wave numbers to a constant baseline point.
20. 4), concentrated in vacuo and chromatographed.
21. 3), 7.29-7.82 (m, 9 H).