在
potassium carbonate 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以100%的产率得到6,12,18,39-Tetramethyl-2,4,8,10,14,16,20,22-octaoxanonacyclo[21.15.1.124,38.05,36.07,34.011,32.013,30.017,28.019,26]tetraconta-1(38),5(36),6,11(32),12,17,19(26),23(39),24(40),27,30,34-dodecaene-3-carboxylic acid