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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1505233Generated: October 31, 2026

1,1'-Carbonyldiimidazole → HCID 53476816, compound

https://huagongshe.com/reaction/1505233

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,1'-CarbonyldiimidazoleHCID 68263—
Reactant4-tert-ButylbenzylamineHCID 2735655—
Reactant8-Amino-2H-1,4-benzoxazin-3(4H)-oneHCID 11593488—
SolventDimethylformamideHCID 6228—
SolventTetrahydrofuranHCID 8028—
ProductHCID 53476816HCID 5347681627%

Reaction Conditions

Temperature70 °C

Reaction Steps

To a solution of 4-tert-butylbenzylamine (2 mL, 11.36 mmol) in THF (30 mL) was added CDI (2.1 mol eq, 3.86 g) and the mixture was heated at 70° C. overnight. The reaction mixture was evaporated, water was added and the aqueous phase was extracted with EtOAc (3×30 mL). The recombined organic phases were anhydrified over Na2SO4 and evaporated at reduced pressure (pale yellow oil, quantitative yield). The oil obtained (0.58 g, 2.28 mmol) was dissolved in DMF (20 mL) and the bicyclic amine 1f was added (0.8 mol eq, 0.30 g), then the mixture obtained was heated at 100° C. overnight. The solvent was removed at reduced pressure and the residue was purified by chromatography (1:1 EtOAc:petroleum ether) to obtain the product as a white solid (0.17 g, 27% Yield). 1HNMR (DMSO, 400 MHz) δ 1.26 (s, 9H), 4.24 (d, 2H, J=6), 4.60 (s, 2H), 4.45 (dd, 1H, J=2), 6.81 (t, 1H, J=10), 7.18 (d, 2H, J=8), 7.36 (d, 2H, J=8), 7.76 (dd, 1H), 8.06 (bs, 1H), 10.64 (bs, 1H). [M+1] 353.98 (C20H23N3O3 requires 353.41).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09216975B2
Source datasetuspto-grants-2015_12
ORD IDord-f9510294756040069c9170bc5a350790
Source noteuspto-grants-2015_12