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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1773255Generated: October 30, 2026

Sulfuric Acid → HCID 49779837, compound

https://huagongshe.com/reaction/1773255

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantSodium BicarbonateHCID 516892—
Reactant1,2-Dimethylpiperidin-4-oneHCID 12424039—
ReactantHCID 66601555HCID 66601555—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 49779837HCID 49779837—

Reaction Conditions

Temperature90 °C

Reaction Steps

To a stirred solution of 1-(4-chlorophenyl)-1-(2-(6-methylpyridin-3-yl)ethyl)hydrazine (1 g, 3.83 mmol) in dioxane (10 mL) was added 1,2-dimethylpiperidin-4-one (0.538 g, 4.59 mmol) and 0.5 mL of conc. sulfuric acid at RT. The reaction was heated at 90° C. for 2 h. After completion of reaction, the mixture was basified by addition of a saturated solution of NaHCO3. The product was extracted with EtOAc, and the organic layer washed with water, dried over sodium sulfate and concentrated. The solid obtained was purified by HPLC. 1HNMR (CD3OD, TFA salt) d (ppm): 8.30 (s, 1H), 8.05 (d, 1H), 7.64 (d, 1H), 7.50 (s, 1H), 7.24 (d, 1H), 7.10 (d, 1H), 4.50 (t, 2H), 4.40 (m, 1H), 4.0 (m, 1H), 3.80 (m, 1H), 3.30 (m, 3H), 3.0 (m, 4H), 2.62 (s, 3H), 1.50 (d, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09255094B2
Source datasetuspto-grants-2016_02
ORD IDord-e7d56978e9ec4cfd87b7977ddfe98cab
Source noteuspto-grants-2016_02