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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1371565Generated: October 31, 2026

Citric Acid → HCID 58778279, compound

https://huagongshe.com/reaction/1371565

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCitric AcidHCID 311—
Reactant2-MethoxyanilineHCID 7000—
ReactantSodium triacetoxyborohydrideHCID 5049666—
Reactanttert-Butyl (2-oxoethyl)phenylcarbamateHCID 15168496—
SolventDichloromethaneHCID 6344—
SolventEthyl AcetateHCID 8857—
ProductHCID 58778279HCID 5877827951%

Reaction Steps

Boc-phenylglycinal (0.74 g, 3.1 mmol) and 2-methoxyaniline (0.40 g, 3.3 mmol) were combined in dichloromethane and sodium triacetoxyborohydride (0.80 g, 3.8 mmol) was added as a solid. The reaction mixture was stirred at room temperature for 4 hours, diluted with 10% citric acid and ethyl acetate, and the organic layer was then washed with saturated sodium bicarbonate, washed with brine, dried over sodium sulfate and concentrated to an oil, which was purified by column chromatography on silica (0 to 30% EtOAc/hexanes) to give a white foam, 0.54 g, 1.6 mmol, 51% yield. 1H NMR (500 MHz, CDCl3) δ 7.31–7.21 (m, 5H), 6.78 (m, 1H), 6.68 (m, 1H), 6.60 (m, 2H), 5.04 (br s, 1H), 4.89 (br s, 1H), 4.32 (br s, 1H), 3.71 (s, 3H), 3.39 (m, 2H), 1.35 (s, 9H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07157476B2
Source datasetuspto-grants-2007_01
ORD IDord-de191283b34c40fe8d9d0a8d31aeb777
Source noteuspto-grants-2007_01