C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 211/90 (2006.01)
Patent
CA 2087645
ABSTRACT An improved process for dehydrating dialkyl 2,6- bis(trifluoromethyl)-2,6-dihydroxy-4-(alkyl)-3,5- piperidinedicarboxylates using concentrated sulfuric acid essentially in the absence of a solvent to prepare the corresponding dialkyl 2,6-bis(trifluoromethyl)- dihydro-4-(alkyl)-3,5-pyridinedicarboxylates.
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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