Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 747042Generated: October 31, 2026

HCID 72440634, compound → 4-Amino-1-methyl-2,2-dioxo-1,2,3,4-tetrahydro-2lambda6-benzo[c][1,2]thiazine-7-carboxylic Acid Methyl Ester

https://huagongshe.com/reaction/747042

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 72440634HCID 72440634—
CatalystPalladium hydroxideHCID 9942167—
SolventMethanolHCID 887—
Product4-Amino-1-methyl-2,2-dioxo-1,2,3,4-tetrahydro-2lambda6-benzo[c][1,2]thiazine-7-carboxylic Acid Methyl EsterHCID 58841352—

Reaction Steps

4-Hydroxyimino-1-methyl-2,2-dioxo-1,2,3,4-tetrahydro-2λ6-benzo[c][1,2]thiazine-7-carboxylic acid methyl ester (1.50 g, 5.28 mmol) was hydrogenated over Pd(OH)2 (1.30 g, 20% on carbon, wet) in MeOH (100 mL) for 60 h. After filtration and evaporation, chromatography (silica, 0-3% MeOH in CH2CL2) furnished the title compound. MS (+APCI, m/z): 271 (M+H)+, 254 (M−NH2)+, MS (-APCI, m/z): 252 (M−N4)−.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07393852B2
Source datasetuspto-grants-2008_07
ORD IDord-418ed4f8dfa04863b90e1765c2f00c83
Source noteuspto-grants-2008_07