1356396-76-3Relevant academic research and scientific papers
Synthesis of spiro[furan-3,3′-indolin]-2′-ones by PET-catalyzed [3+2] reactions of spiro[indoline-3,2′-oxiran]-2-ones with electron-rich olefins
Wang, Lihong,Li, Zhanshan,Lu, Lianhong,Zhang, Wei
, p. 1483 - 1491 (2012)
An efficient procedure for the synthesis of spiro[furan-3,3′-indolin] -2-ones and dispiro[cycloalkane-1,2′-furan-3′,3″-indolin]- 2″-ones has been achieved in high yields and stereoselectivity by photoinduced electron transfer-catalyzed [3+2] reactions of substituted spiro[indoline-3,2′-oxiran]-2-ones with olefins. The reactions proceed by ring opening of spiro[indoline-3,2′-oxiran]-2-ones via C β-O bond cleavage and subsequent cycloaddition with olefins by using 2,4,6-triphenylpyrylium tetarfluoroborate (TPT) as a sensitizer.
