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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2237431Generated: October 31, 2026

1,4-Dioxane hydrochloride → Hydrochloric Acid

https://huagongshe.com/reaction/2237431

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,4-Dioxane hydrochlorideHCID 20443148—
Reactant1,1-Dimethylethyl 2-bromo-4,5,7,8-tetrahydro-6H-thieno[2,3-d]azepine-6-carboxylateHCID 59302551—
SolventDiethyl EtherHCID 3283—
ProductHydrochloric AcidHCID 313—
Product2-BROMO-5,6,7,8-TETRAHYDRO-4H-THIENO[2,3-D]AZEPINEHCID 11535969—

Reaction Steps

The product of step g) (0.39 mmol) dissolved in ether (1 ml) was treated with 4 M HCl/dioxane (1 ml). The reaction mixture was stirred for 18 hours at ambient temperature. The resulting precipitate was filtered and washed with anhydrous diethyl ether to give the title compound as its HCl salt. 1H NMR (300 MHz, DMSO) δ 9.40 (s, 2H), 7.05 (s, 1H), 3.14-3.33 (m, 4H), 2.94-3.23 (m, 2H), 2.76-3.06 (m, 2H). MS: ESI (positive): 232, 234 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07718647B2
Source datasetuspto-grants-2010_05
ORD IDord-1284d3a8d0b544cc8440ba1055830255
Source noteuspto-grants-2010_05