Isomerization of spirobenzopyrans bearing electron-donating and electron-withdrawing groups in acidic aqueous

Taku Satoh1, Kimio Sumaru, Toshiyuki Takagi

  • 1Research Center for Stem Cell Engineering, National Institute of Advanced Industrial Science and Technology, AIST Tsukuba Central 5, 1-1-1, Higashi, Tsukuba, Ibaraki 305-8568, Japan.

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