Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-12-04
1977-05-31
Thomas, Jr., James O.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07D31172
Patent
active
040269078
ABSTRACT:
The (6-hydroxy-chroman-2-yl) acetic or carboxylic acid derivatives useful as antioxidants and a method for preparing these derivatives from hydroquinones and intermediates in this synthesis as well as the use of these derivatives as intermediates in the preparation of optically active alpha-tocopherol.
REFERENCES:
mayer et al., Helv. Chim. Acta, 46, 650 (1963).
Weichet et al., Coll. Czech. Chem. Comm., 24, 1689 (1959).
McOmie, Adv. in Org. Chem., vol. 3, pp. 216-233 (1963).
Parrish David Richard
Saucy Gabriel
Scott John William
Chan Nicky
Gaither Richard A.
Hoffmann-La Roche Inc.
Leon Bernard S.
Thomas, Jr. James O.
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