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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1634944Generated: October 27, 2026

Bis-(1H-imidazol-2-YL)-methanone → 6-Bromospiro[4H-3,1-benzoxazine-4,1'-cyclohexan]-2(1H)-one

https://huagongshe.com/reaction/1634944

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBis-(1H-imidazol-2-YL)-methanoneHCID 5250894—
Reactant1-(2-Amino-5-bromo-phenyl)cyclohexanolHCID 23509603—
Product6-Bromospiro[4H-3,1-benzoxazine-4,1'-cyclohexan]-2(1H)-oneHCID 22021904—

Reaction Steps

Prepared from 1-(2-amino-5-bromo-phenyl) cyclohexanol and carbonyl diimidazole according to the procedure of Example 2. Off-white solid: mp 208-210° C. 1H-NMR (DMSO-d6) δ10.26 (s, 1H), 7.45 (d, 1H, J=2.2 Hz), 7.39 (dd, 1H, J=8.2, 2.2 Hz), 6.81 (d, 1H, J=8.3 Hz), 1.90-1.97 (m, 2H), 1.80-1.85 (m, 5H), 1.25-1.35 (m, 1H); MS (APC1) m/z 296 ([M+H]+, 68%)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06509334B1
Source datasetuspto-grants-2003_01
ORD IDord-9b0d89ba2eb844d49f01f1f901664a53
Source noteuspto-grants-2003_01