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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2399330Generated: October 31, 2026

Water → HCID 19387252, compound

https://huagongshe.com/reaction/2399330

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 numberUS05447943
Source datasetuspto-grants-1995_09
ORD IDord-25e9c06589d94859b2555406b87af5cf
Source noteuspto-grants-1995_09