An article Photochemical Reaction of o-Phthalaldehyde with Fullerene C-60: The Stimulus for the Phthalide Additions to C-60 WOS:000492793400001 published article about RADICAL REACTIONS; INTERMEDIATE; PHOTOLYSIS; CHEMISTRY in [Tzirakis, Manolis D.; Malliaros, Nikitas G.; Orfanopoulos, Michael] Univ Crete, Dept Chem, Voutes Campus, Iraklion 71003, Crete, Greece in 2019, Cited 18. Safety of Isobenzofuran-1(3H)-one. The Name is Isobenzofuran-1(3H)-one. Through research, I have a further understanding and discovery of 87-41-2
A new, simple, and rapid photochemical reaction of o-phthalaldehyde with C-60 has been disclosed. This reaction afforded exclusively the unanticipated C-60-phthalide derivative 11 in good yield. The formation of this product is consistent with the intervention of a key free-radical intermediate -a benzylic radical- in the course of the reaction. The structure of 11 has been determined by the combined use of experimental and theoretical NMR studies. In the course of this study we further disclosed a new mode of radical reactivity of C-60 with a series of substituted phthalides (2, 15-17) catalyzed by tetrabutylammonium decatungstate.
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Reference:
Benzofuran – Wikipedia,
,Benzofuran | C8H6O – PubChem