CONDENSATION OF ARYL DIAZONlUM SALTS WITH REACTIVE UNSATURATED COMPOUNDS. PART V. ACTION OF ARYL DlAZONIUM CHLORIDES WITH BROMOMALEIC ACID

An aryl diazonium chloride reacts with bromornalcic acid (A) to give a \(\beta\)-arylated product, viz , an \(\alpha\)-bromo-\(\beta\)-arylacrylic acid of a certain stereoisomeric form The non-reversible nature of radical and ionic addition for (A) is confirmed and the occurreuce of \(\beta\)-arylation both in (A) and citraconic acid is clarified.