Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07D
HETEROCYCLIC COMPOUNDS
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265/00
Heterocyclic compounds containing six-membered rings having one nitrogen atom and one oxygen atom as the only ring hetero atoms
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C07D265/04
1,3-Oxazines; Hydrogenated 1,3-oxazines
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C07D265/12
condensed with carbocyclic rings or ring systems
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C07D265/14
condensed with one six-membered ring
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C07D265/20
with hetero atoms directly attached in position 4
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C07D265/20

Method for preparation of Carsalam
12304892 · 2025-05-20 · ·

The invention discloses a method for preparation of Carsalam by a reaction of salicylamide with diethyl carbonate in the presence of an alkali ethoxide.