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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1719102Generated: October 25, 2026

N-acetyl-S-(2-aminophenyl)cysteine → 5,1-Benzothiazepine-2-one, 3-acetylamino-

https://huagongshe.com/reaction/1719102

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-acetyl-S-(2-aminophenyl)cysteineHCID 57145208—
SolventO-XyleneHCID 7237—
Product5,1-Benzothiazepine-2-one, 3-acetylamino-HCID 53936271.7%

Reaction Steps

1.2 g of N-acetyl-S-(2-aminophenyl)cysteine was dissolved in 20 ml of xylene and the resulting solution was heated under reflux for 2 hours. After cooling, the precipitated crystals were separated and washed with methanol to obtain 0.8 g of the desired compound, or 3-acetylamino-2,3-dihydro-1,5-benzothiazepin-4(5H)-one. Its melting point was 283°-286° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04539151
Source datasetuspto-grants-1985_09
ORD IDord-69814e6d39a44174a436f6162e7f9839
Source noteuspto-grants-1985_09