C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/290.4
C07D 213/67 (2006.01)
Patent
CA 1128948
ABSTRACT Pyridoxine and acid addition salts thereof are produced by reacting 4-carboxymethyl-5-substituted oxy-oxazoles with 4,7-dihydro-1,3-dioxepines in the presence of a compound of the formula Image wherein X is oxygen, -NH-, or -NH-NH- and, then, subjecting the resultant compound to hydrolysis. This process offers industrially a more advantageous production of pyridoxine than hitherto known processes.
368241
Fetherstonhaugh & Co.
Takeda Chemical Industries Ltd.
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