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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1597963Generated: October 30, 2026

Hydrochloric Acid → HCID 18932751, compound

https://huagongshe.com/reaction/1597963

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2-BromoethanolHCID 10898—
ReactantTetramethylammonium Hydroxide PentahydrateHCID 82620—
ReactantHCID 136119078HCID 136119078—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductHCID 18932751HCID 1893275195.7%

Reaction Conditions

Temperature50 °C

Reaction Steps

To 4-(6-chloro-2,3-dihydro-indol-1-yl)-quinazolin-7-ol (125 mg, 0.42 mmol; from Example 65) in DMF (2 mL) was added H2O (50 μL), K2 CO3 (s) (116 mg, 0.84 mmol), and tetramethylammonium hydroxide pentahydrate (15 mg, 0.08 mmol) followed by 2-bromoethanol (39 μL, 0.46 mmol). The mixture was stirred at 50° C. under N2(g) and aliquots of 2-bromoethanol (3×20 μL) were added at 24 hour invervals. Extractive workup and chromatography analogous to that described in Example 1 followed by conversion to the HCl salt as outlined for Example 2 afforded 76 mg (53%) of product. (M.P. 215°-217° C.; LC-MS: 342 (MH+); anal. RP18-HPLC RT: 4.09 min.).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05736534
Source datasetuspto-grants-1998_04
ORD IDord-66fcb70a68b7431aaa10883e7c6babaa
Source noteuspto-grants-1998_04