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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1534593Generated: October 30, 2026

Pyridine → HCID 54549977, compound

https://huagongshe.com/reaction/1534593

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantAcetic AnhydrideHCID 7918—
ReactantSodium HydroxideHCID 14798—
Reactant8-Chloro-11-(piperidin-4-ylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridin-5-olHCID 14637775—
SolventMethanolHCID 887—
SolventWaterHCID 962—
SolventDichloromethaneHCID 6344—
ProductHCID 54549977HCID 54549977—

Reaction Steps

To a mixture of 32.6 mg (0.10 mmole) of 5-hydroxy-8-chloro-11-(4-piperidylidene)-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine and 9.7 )1 (0.12 mmole) of pyridine in a solution of 2 mL of methanol and 1 mL of CH2Cl2 at 0° C. and under a nitrogen atmosphere was added 11.3 )1 (0.12 mmole) of acetic anhydride. After 30 min. the mixture was poured into water which was subsequently adjusted to pH of about 9 with aqueous sodium hydroxide. The mixture was extracted 2× with CH2Cl2. The organic portions were combined, washed once with brine, dried over Na2SO4, filtered, and concentrated in vacuo to yield 31.2 mg of the title compound as a glass.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05089496
Source datasetuspto-grants-1992_02
ORD IDord-460cbf63e7674d20a8cc9e22f9b3a5b2
Source noteuspto-grants-1992_02