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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2408615Generated: October 30, 2026

Dimethylbarbituric acid → HCID 68488633, compound

https://huagongshe.com/reaction/2408615

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylbarbituric acidHCID 69860—
ReactantHCID 68283240HCID 68283240—
CatalystHCID 178418397HCID 178418397—
SolventDichloromethaneHCID 6344—
ProductHCID 68488633HCID 684886334.6%

Reaction Steps

2-Allyl-8-methyl-5-(2-(pyridin-4-yl)vinyl)-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (50 mg, 0.151 mmol) was dissolved in DCM (2 mL), which was degassed with nitrogen for 15 min. To this was added Pd(PPh3)4 (4 mg, 0.002 mmol) followed by 1,3-dimethyl barbituric acid (71 mg, 0.454 mmol). The reaction mixture was again degassed by nitrogen for 15 min. The resultant mixture was stirred at RT for 1 h. DCM was evaporated in vacuo. EtOAc (20 mL) was added to reaction mixture and was washed with saturated potassium carbonate solution (3×1 mL). The organic layer was dried over anhydrous sodium sulfate, evaporated in vacuo and purified by reverse phase HPLC to obtain 2 mg of 8-methyl-5-(2-(pyridin-4-yl)vinyl)-2,3,4,5-tetrahydro-1H-pyrido[4, 3-b]indole. 1H NMR (CD3OD, Free base): δ (ppm): 8.45 (d, 2H), 8.0 (d, 1H), 7.7 (d, 1H), 7.58 (d, 2H), 7.3 (s, 1H), 7.19 (d, 1H), 6.8 (d, 1H), 4.29 (s, 2H), 3.42 (m, 2H), 3.2 (m, 2H), 2.4 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08815843B2
Source datasetuspto-grants-2014_08
ORD IDord-0b1528e306c74f7ca37d95334403e564
Source noteuspto-grants-2014_08