3026. 2,6-Dibromoquinone-4-chlorimide

Nomenclature

CAS number: 537-45-1
2,6-Dibromo-4-(chloroimino)-2,5-cyclohexadien-1-one; 2,6-dibromo-N-chloro-p-benzoquinoneimine; 2,6-dibromo-N-chloroquinonimine; BQC reagent.
C6H2Br2ClNO; mol wt 299.35.
C 24.07%, H 0.67%, Br 53.39%, Cl 11.84%, N 4.68%, O 5.34%.

Description and references

Prepn: Hartman et al., Org. Synth. coll. vol. II, 175 (1943).

Chemical structure

Properties

Yellow prisms from alc or glacial acetic acid, mp 83°. Sol in about 17,000 parts water; moderately sol in hot alc, hot glacial acetic acid. Gives a blue color with alk phenol soln.

Use

As a reagent for phenol and phosphatases: Ljunggren, Proc. 13th Int. Dairy Congr. 3, 1319 (1953).