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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1518134Generated: November 4, 2026

4-Bromobenzene-1,2-diamine → HCID 178419324, compound

https://huagongshe.com/reaction/1518134

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Bromobenzene-1,2-diamineHCID 323593—
Reactant1-Oxa-2-azaspiro[4.5]dec-2-ene-3-carboxylic acidHCID 50994114—
ProductHCID 178419324HCID 178419324—

Reaction Steps

The title compound was prepared from 1-oxa-2-aza-spiro[4.5]dec-2-ene-3-carboxylic acid (283 mg, 1.55 mmol, as prepared in Example 1, step B) and 4-bromobenzene-1,2-diamine (1.3 eq., 377 mg, 2.02 mmol) in 68% overall yield (299 mg) according to the procedures described in Example 1, steps F and G. 1H-NMR (400 MHz, d4-MeOH) δ: 7.74 (s, 1H), 7.51 (d, J=8.6 Hz, 1H), 7.40 (dd, J=8.6, 1.8 Hz, 1H), 3.25 (s, 2H), 1.69-1.88 (m, 6H), 1.43-1.63 (m, 4H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08232409B2
Source datasetuspto-grants-2012_07
ORD IDord-37b72d5db4b54776a3c619e065d35b7e
Source noteuspto-grants-2012_07