Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2255509Generated: October 31, 2026

Sodium hydride → HCID 19737995, compound

https://huagongshe.com/reaction/2255509

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium hydrideHCID 24758—
Reactant4-(Chloromethyl)pyridineHCID 74571—
Reactant4-Hydroxy-3,4-dihydro-1lambda~6~-thieno[3,2-e][1,2]thiazine-1,1(2H)-dioneHCID 22901942—
SolventDimethylformamideHCID 6228—
ProductHCID 19737995HCID 1973799585%

Reaction Conditions

Temperature-10 °C

Reaction Steps

The product from Step C of Example 2 (4.0 g, 19.5 mmol) was dissolved in anhydrous DMF (20 mL) and cooled to -10° C. and sodium hydride (21.5 mmol) was added. After stirring for 40 min at room temperature, a solution of 4-picolyl chloride (3.7 g, 29.2 mmol) in DMF (15 mL) was added to the chilled (0° C.) reaction mixture. The mixture was allowed to warm to room temperature and stir for 18 h. The solution was concentrated and the residue was suspended in saturated sodium bicarbonate (50 mL) and the desired subject was collected by filtration. Recrystallization from ethanol gave a beige solid (4.9 g, 85%): mp 183°-185° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05240923
Source datasetuspto-grants-1993_08
ORD IDord-2945dc394f5647b29eb6be6d35980b3b
Source noteuspto-grants-1993_08