dimethyl trans-2-but-2-ynyl-2-[3-(2-methoxycarbonyl-cyclopropyl)-allyl]-malonate 在
cyclopentadienylruthenium(II) trisacetonitrile hexafluorophosphate In(OSO
2CF
3)3 作用下,
以
丙酮 为溶剂,
反应 2.0h,
生成 trans-4-methyl-3,5,6,8a-tetrahydro-1H-azulene-2,2,5-tricarboxylic acid trimethyl ester 、 trans-8-methyl-3,5,6,8a-tetrahydro-1H-azulene-2,2,6-tricarboxylic acid trimethyl ester