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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1060626Generated: October 26, 2026

Water → 7-Bromo-5-methoxyindoline

https://huagongshe.com/reaction/1060626

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium HydroxideHCID 14798—
ReactantEther hydrochlorideHCID 10953452—
Reactant1h-Indole-1-carboxylic acid,7-bromo-2,3-dihydro-5-methoxy-,1,1-dimethylethyl esterHCID 18629219—
SolventMethanolHCID 887—
SolventDiethyl EtherHCID 3283—
Product7-Bromo-5-methoxyindolineHCID 1845281885%

Reaction Conditions

Temperature55 °C

Reaction Steps

Part D: To 1-(tert-butoxycarbonyl)-7-bromo-5-methoxyindoline (1.16 g) in methanol (28 mL) was added HCl/ether (1.0 M, 14.1 mL, 4 eq.). The reaction was heated at 55° C. for 4 hours and then cooled to room temperature. Water (25 mL) was added and the pH was adjusted to 9 with NaOH (1 N, aq.). The mixture was extrated with ether, which was washed with brine, dried over MgSO4, and concentrated to give 7-bromo-5-methoxyindoline (685 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06525056B2
Source datasetuspto-grants-2003_02
ORD IDord-1b6455703b684674aa8e2c8dcbd56cf6
Source noteuspto-grants-2003_02