Synthesis of D,L-α-tocopherol using strong solid acids as catalysts

Journal of Catalysis

Volumn 182, Issue 1, 1999, Pages 282-284

  Schager, Frank ^a   Bonrath, Werner ^a  

^a F HOFFMANN LA ROCHE LTD   (Switzerland)

Author keywords

D,L tocopherol; Friedel Crafts reaction; Solid acids

Indexed keywords

EID: 0000027987     PISSN: 00219517     EISSN: None     Source Type: Journal    
DOI: 10.1006/jcat.1998.2351     Document Type: Article

References (18)

1. Isler, O., Brubacher, G., Ghisla, S., and Kräutler, B., in "Vitamine I," p. 126. Thieme, Stuttgart, 1988.
2. Karrer, P., U.S. Patent 2,411,967 (1946);
3. Greenbaum, S. B., Hacke, W., and Horn, H., U.S. Patent 3,708,505 (1971);
4. Skoda, A., Proska, B., and Majar, M., CS 254,402 (1989);
5. Finnan, J. L., EP 100,471 (1982);
6. Schulz, B., and Renauer, E., DE 3,203,487 (1983).
7. Waller, F. J., and Van Scoyoc, R. W., Chem. Tech. 17, 438 (1987);
8. Olah, G. A., Prakash, G. K., and Sommer, J., Science 206, 13 (1979);
9. Childs, R. F., and Mika-Gibala, A., J. Org. Chem. 47, 4207 (1982).
10. Olah, G. A., Iyser, P. S., and Prakash, G. K. S., Synthesis, 513 (1986).
11. Harmer, M. A., Farneth, W. E., and Sun, O., J. Am. Chem. Soc. 118, 7708 (1996).
12. Heidekum, A., Harmer, M. A., and Hoelderich, W. F., J. Catal. 176, 260 (1998).
13. Olah, G. A., Kaspi, J., and Bukala, J., J. Org. Chem. 42, 4187 (1977).
14. Bonrath, W., European Patent 782,993 (1997); C.A. 127: 109,079.
15. Matsui, M., Karibe, K., Hayashi, K., and Yamamoto, H., Bull. Chem. Soc. Jpn. 68, 3569 (1995).
16. Olah, G. A., Malhotra, R., Narang, S. C., and Olah, J. A., Synthesis, 672 (1978).
17. Nelan, D. R., U.S. Patent 3,444,213 (1969); C.A. 71: 13,238z.
18. Tachibana, Y., Bull. Chem. Soc. Jpn. 50, 2477 (1977).