A process for the production of 2-alkyl- or 2-alkenyl-4,6-diacetyl resorcinols; 2-allyl-4,6-diacetyl resorcinol
申请人:FISONS plc
公开号:EP0012512A1
公开(公告)日:1980-06-25
2-Alkyl- or 2-Alkenyl-4,6-diacetyl resorcinols of the formula
in which R1 is alkyl C 1 to 6, e.g. isopropyl, or alkenyl C 2 to 6, e.g. allyl, are obtained by reacting 4,6-diacetylresorcinol with a corresponding alkyl or alkenyl halide. The reaction is carried out preferably at a temperature of from 20 to 120° C, in a polar hydrogen bonding solvent, e.g. water, and in the presence of a base. The product 4,6-diacetyl resorcinols are useful as intermediates in the production of certain bezodipyran-dicarboxylic acids, which are of known utility as pharmaceuticals. Certain of the product 4,6-diacetyl resorcinols are novel.
式中的 2-烷基-或 2-烯基-4,6-二乙酰基间苯二酚,其中 R1 为 C 1-6 烷基(如异丙基)或 C 2-6 烯基(如烯丙基)。
其中 R1 为 C 1-6 烷基(如异丙基)或 C 2-6 烯基(如烯丙基)的间苯二酚与相应的烷基或烯基卤化物反应而得。反应最好在 20 至 120 摄氏度的温度下、极性氢键溶剂(如水)中和碱存在下进行。产物 4,6-二乙酰基间苯二酚可用作生产某些已知可用作药物的苯并二吡喃二羧酸的中间体。某些 4,6-二乙酰基间苯二酚产品具有新颖性。