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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1655391Generated: November 2, 2026

Water → HCID 19387252, compound

https://huagongshe.com/reaction/1655391

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantTriethylamineHCID 8471—
ReactantMethanesulfonyl chlorideHCID 31297—
Reactant6-nitro-2,2-dimethyl-3-aminomethyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyranHCID 19387052—
SolventDichloromethaneHCID 6344—
ProductHCID 19387252HCID 1938725256.5%

Reaction Steps

To a solution of 6-nitro-2,2-dimethyl-3-aminomethyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran (0.43 g, 1.31 mmol) and triethylamine (0.22 ml, 1.58 mmol) in dichloromethane (15 ml) was added methanesulfonylchloride (0.12 ml, 1.55 mol). The solution was stirred at room temperature for four hours, and then water was added. The organic phase was separated and evaporated under reduced pressure. The residue was washed with diethyl ether, affording 0.3 g of 6-nitro-2,2-dimethyl-3-(methanesulfonamido)methyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran, m.p. 195° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05250547
Source datasetuspto-grants-1993_10
ORD IDord-fc401c0bb5ae459db83367e7eef558c8
Source noteuspto-grants-1993_10