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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 64594Generated: October 31, 2026

Ethyl 3-acetyl-1,2,3,4-tetrahydro-4-(2-(p-methoxybenzylthio)-5-nitrophenyl)-6-methyl-2-oxo-5-pyrimidine carboxylate → Ethyl 5-acetyl-3,4,5,6-tetrahydro-2-methyl-8-nitro-4-oxo-2,6-methano-2H-1,3,5-benzothiadiazocine-11-carboxylate

https://huagongshe.com/reaction/64594

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl 3-acetyl-1,2,3,4-tetrahydro-4-(2-(p-methoxybenzylthio)-5-nitrophenyl)-6-methyl-2-oxo-5-pyrimidine carboxylateHCID 20236389—
ReactantAnisole trifluoroacetic acidHCID 66633105—
ProductEthyl 5-acetyl-3,4,5,6-tetrahydro-2-methyl-8-nitro-4-oxo-2,6-methano-2H-1,3,5-benzothiadiazocine-11-carboxylateHCID 20236387—

Reaction Steps

The compound 2b is treated with anhydrous trifluoroacetic acid:anisole (1:1) at 25° C. for 1 hour to yield a mixture of the diastereomers of the desired product. The individual diastereomers may be separated by chromatography.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04609494
Source datasetuspto-grants-1986_09
ORD IDord-9e093d8c22bc41a8ac9f53cb929ef0ae
Source noteuspto-grants-1986_09