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Substituted aromatic hydrazides react very smoothly with sodium perborate in glacial acetic acid at room temperature to giveN,N'·diacylhydrazines in excellent yields and purity. 7. N,N'-bis(m.methylbenzoyl)hydrazine 0 2.35 (s, 6H, -CH 3 ) , 7.40-7.75 (m, 8H, Ar-H).

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Halogen compoundsHalogen compounds Q 0090 Practical and Regioselective Brominations of Aromatic Compounds Using Tetrabutylammonium Peroxydisulfate. -The reaction of various activated aromatic compounds is achieved under mild conditions, using bromine or LiBr in the presence of tetrabutylammonium peroxydisulfate. A mechanism for the bromination with LiBr is proposed. -(PARK, M. Y.; YANG, S. G.; JADHAV, V.; KIM*, Y. H.; Tetrahedron Lett. 45 (2004) 25, 4887-4890; Dep. Chem., Korea Adv. Inst. Sci. Technol., Taejon 305-701, S. Korea; Eng.) -Roy 39-072