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Communication | Regular issue | Vol 2, No. 1, 1974, pp.51-54
Published online, 1st January, 1970
DOI: 10.3987/R-1974-01-0051
Photodehydroxylation of Some 3-Hydroxyoxindoles

Noboru Shoji, Yoshikazu Kondo,* and Tsunematsu Takemoto

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


Photoreduction of 3-substituted 3-hydroxyoxindoles I-IV in the presence of sodium hydrosulfite led to loss of the 3-hydroxyl group. Irradiation at longer wavelengths (λ> 3000 Å) did not cause this photodehydroxylation.