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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 22787Generated: October 25, 2026

tert-Butanol → N,N-diethyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4-amine

https://huagongshe.com/reaction/22787

Reaction equation

Participants

RoleNameHCIDCharge
Reactanttert-ButanolHCID 6386—
ReactantDiethylamineHCID 8021—
ReactantEthyl AcetateHCID 8857—
Reactant12-Chloro-7-thia-9,11-diazatricyclo(6.4.0.0,2,6)dodeca-1(12),2(6),8,10-tetraeneHCID 789817—
SolventHydrate;hydrochlorideHCID 21885828—
ProductN,N-diethyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4-amineHCID 717848—

Reaction Steps

To a slurry of 0.044 g 4-chloro-6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidine (0.196 mmol) in 1 mL of 100:1 H2O/HCl was added 0.014 g (0.02 mL, 0.106 mmol) diethylamine. The mixture was heated to reflux, and an additional 0.2 mL diethylamine and 1 mL of t-butanol were added and heated continued at reflux for an additional 1 h. TLC (20% EtOAc/80% pet ether) showed complete reaction and the 1H NMR of the isolated material was consistent with the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06849638B2
Source datasetuspto-grants-2005_02
ORD IDord-dcfb3b429c2544d6bb6f40646bccd630
Source noteuspto-grants-2005_02