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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 268672Generated: October 30, 2026

Sulfuric Acid → 7-Isopropylindoline-2,3-dione

https://huagongshe.com/reaction/268672

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
Reactant2-(Hydroxyimino)-N-[2-(propan-2-yl)phenyl]acetamideHCID 71443947—
Product7-Isopropylindoline-2,3-dioneHCID 1227279384%

Reaction Conditions

Temperature80 °C

Reaction Steps

To concentrated sulfuric acid at 80° C. was added 2-hydroxyimino-N-(2-isopropyl-phenyl)-acetamide in several small portions over 10 minutes. After addition it was heated at 80° C. for 30 minutes., then poured into ice. Filtration, washing with water, and drying under vacuum over P2O5 provided 2.974 g (84%) of the title compound as a solid. ESI (−) MS m/e=188 (MH−).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07446122B2
Source datasetuspto-grants-2008_11
ORD IDord-fed303f8340645ab8a55b2ebef99768f
Source noteuspto-grants-2008_11