H. Lübbecke, P. Boldt
1978
Citations
0
Influential Citations
34
Citations
Journal
Tetrahedron
Abstract
Abstract Chloranil 6 and bromanil 7 are prepared in very good yields from phenol or hydroquinone with concentrated hydrochloric or hydrobromic acid/30% hydrogen peroxide and magnesium chloride as catalyst. With catechol the reaction stops at the tetrachloro- or tetrabromo- o -hydroquinone ( 4 or 5 ) stage. The iodination of phenol with potassium iodide/hydrogen-peroxide in acetic acid yields 2,4,6-tri-iodophenol ( 3 ).