A procedure for the obtaining of substitute blues in position 4 and/or in position 8 (Machine-translation by Google Translate, not legally binding)

摘要

Process for obtaining substituted azulenes in position 4 and/or in position 8 or of alkylated, arylated or aralkylated azulenes in position 4 and/or in position 8, characterized in that a azulene not substituted in position 4 and/or in position 8 it is reacted with an alkyl, aryl or aralkyl metal and the addition product thus obtained is converted into the corresponding dihydroazulene by treatment with a combination containing an acid hydrogen atom and that is then dehydrogenated in the corresponding azulene or said addition product it is converted into the corresponding tile by thermal decomposition or by means of steam distillation. (Machine-translation by Google Translate, not legally binding)