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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 452403Generated: October 30, 2026

Methylamine → HCID 44481362, compound

https://huagongshe.com/reaction/452403

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylamineHCID 6329—
Reactant2-(bromomethyl)-7-(methylsulfonyl)-4H-1,3-benzodioxineHCID 66886440—
SolventEthanolHCID 702—
ProductHCID 44481362HCID 4448136274.7%

Reaction Conditions

Temperature145 °C

Reaction Steps

A mixture of 2-(bromomethyl)-7-(methylsulfonyl)-4H-1,3-benzodioxine (0.4 g, 1.30 mmol), methanamine (33% in EtOH, 2.0 ml, 16.1 mmol) and EtOH (3.0 ml) was heated in a micro wave oven at 145° C. for 30 min. The volatiles were evaporated in vacuum and the crude product was chromathographed twice on a silica column using EtOAc/MeOH (4:1) as eluent. Collection of the fractions containing pure product and evaporation of the solvent afforded the title compound (0.25 g, 74%). The amine was converted into hydrochloric acid salt and crystallized from EtOH/MeOH/DEE. M.p. 225° C. MS m/z (rel. intensity, 70 eV) 257 (M+, 1), 123 (76), 78 (35), 77 (bp), 51 (97).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08492372B2
Source datasetuspto-grants-2013_07
ORD IDord-6912a236193241788d5374093848ce31
Source noteuspto-grants-2013_07