Method for deuteration of an inert methylene

Details Method for deuteration of an inert methylene Method for deuteration of an inert methylene

2006-10-24

2006-10-24

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C562S496000, C568S626000, C568S715000, C585S941000

Reexamination Certificate

active

07126023

ABSTRACT:
The present invention relates to a method for deuteration of an inert alkane using activated palladium carbon. The present invention discloses“A method for deuteration of a hydrogen atom of a methyl group or a hydrogen atom bonded to a carbon atom at benzyl position and the other carbon atoms of an alkylene group having not less than 2 carbon atoms, in a compound containing the methyl group or the-alkylene group having not less than 2 carbon atoms, directly bonded to an aromatic ring which may have a substituent, which comprises placing said compound in a deuterated solvent in the presence of activated palladium carbon, under sealed reflux condition”.

REFERENCES:
patent: 0 203 588 (1986-12-01), None
patent: 63-198638 (1988-08-01), None
patent: 10-139694 (1998-05-01), None
Hirota et al, Bulletin of the Chemical Society of Japan, Differences in the Catalytic Activity of Nickel, Platinum and Palladium as Observed in the Isotopic Exchange Reaction of Paraxylene with Deuterium Oxide, 1962, 35, pp. 228-232.
Rylander, Hydrogenation Methods, 985, Academic Press, Inc., Orlando, Florida, p. 4.

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