Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methylamine | HCID 6329 | — |
| Reactant | 2-(bromomethyl)-7-(methylsulfonyl)-4H-1,3-benzodioxine | HCID 66886440 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | HCID 44481362 | HCID 44481362 | 74.7% |
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
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08492372B2 |
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| Source dataset | uspto-grants-2013_07 |
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| ORD ID | ord-6912a236193241788d5374093848ce31 |
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| Source note | uspto-grants-2013_07 |
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