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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2236562Generated: October 31, 2026

Methylamine → HCID 59300078, compound

https://huagongshe.com/reaction/2236562

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylamineHCID 6329—
ReactantHomophthalic anhydrideHCID 12801—
SolventTetrahydrofuranHCID 8028—
ProductHCID 59300078HCID 59300078—

Reaction Conditions

Temperature25 °C

Reaction Steps

To 20 ml of 2.0 M methylamine in THF is added 1.62 g (10 mmol) of isochroman-1,3-dione at 0° C. The mixture is stirred at 25° C. for 45 m and concentrated to dryness. The residue is stirred in 40 ml of 0.3 N HCl. The white solid is filtered off, washed with water, and dried to give 1.74 g (90%); 1H NMR (DMSO-d6) δ 7.80 (s, 1H), 7.81 (s, 1H), 7.40 (m, 3H), 3.83 (s, 2H), 2.57 (s, 3H); MS (ES−) m/z 192.1 (M−H)−1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07713994B2
Source datasetuspto-grants-2010_05
ORD IDord-e433e272231c4484aa41d2122bb90f3c
Source noteuspto-grants-2010_05