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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1752337Generated: October 28, 2026

Hydrochloric Acid → HCID 45088535, compound

https://huagongshe.com/reaction/1752337

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
ReactantSodium MethoxideHCID 10942334—
ReactantHCID 66669427HCID 66669427—
SolventDichloromethaneHCID 6344—
ProductHCID 45088535HCID 45088535103.2%

Reaction Steps

(3S,8aS)-Hexahydro-1H-pyrrolo[2,1-c][1,4]oxazin-3-ylmethyl acetate (2.36 g, 11.9 mmol) was treated with sodium methoxide (25 wt % solution in methanol; 2.7 mL) for 0.5 h. The mixture was cooled in an ice bath and a solution of 4M HCl in 1,4-dioxane (3 mL, 12.0 mmol) was added slowly. The mixture was stirred at room temperature for 5 minutes and then was concentrated in vacuo to afford a suspension which was diluted with dichloromethane, filtered and the filtrate was concentrated in vacuo to afford (3S,8aS)-hexahydro-1H-pyrrolo[2,1-c][1,4]oxazin-3-ylmethanol as a brown oil (1.93 g, >100% yield). 1H NMR (400 MHz, CDCl3): 4.05 (dd, 1H), 3.73-3.65 (m, 2H), 3.62-3.56 (m, 1H), 3.39-3.34 (m, 1H), 3.10 (dt, 1H), 3.00-2.95 (m, 1H), 2.24-1.98 (m, 4H), 1.97-1.70 (m, 3H), 1.44-1.28 (m, 1H); MS (EI) for C8H15NO2: 158 (MH+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09163006B2
Source datasetuspto-grants-2015_10
ORD IDord-f542cd68335049b7a0ab8a482c529717
Source noteuspto-grants-2015_10