Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 252073Generated: October 30, 2026

1-Methylpiperazine → HCID 16039641, compound

https://huagongshe.com/reaction/252073

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-MethylpiperazineHCID 53167—
ReactantHCID 57949692HCID 57949692—
SolventWaterHCID 962—
SolventTetrahydrofuranHCID 8028—
ProductAmmoniaHCID 2225%
ProductHCID 16039641HCID 16039641132.4%

Reaction Conditions

Temperature50 °C

Reaction Steps

Methanesulfonic acid 5-[7-methyl-1-oxo-2-(4-trifluoromethoxy-benzyl)-2,3-dihydro-1H-isoindol-5-yl]-pyridin-3-ylmethyl ester (36 mg, 0.071 mmol) was dissolved in THF (5 mL). N-Methyl piperazine (24 uL, 0.213 mmol) was added and the mixture stirred at 50° C. for 18 hrs. The mixture was cooled, diluted with water, and extracted with ethyl acetate. The organics were washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated. Column chromatography (5% 2M NH3 in MeOH/CH2Cl2) provided the title compound (24 mg, 67%) as a yellow oil. 1H NMR (300 MHz, CDCl3): δ 8.73 (s, 1H), 8.56 (s, 1H), 7.86 (s, 1H), 7.42 (d, 2H), 7.37 (d, 2H), 7.19 (d, 2H), 4.82 (s, 2H), 4.32 (s, 2H), 3.60 (s, 2H), 2.85 (s, 3H), 2.52-2.42 (br s, 8H), 2.30 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07868008B2
Source datasetuspto-grants-2011_01
ORD IDord-7da5dab666474a288f44abf49935bf8f
Source noteuspto-grants-2011_01