Cascade radical cyclization produces thiocyanato-indolones, suggesting a new synthetic approach.
A photoinduced radical cascade cyclization/thiocyanation of N-acylindoles has been developed to obtain a series of thiocyanato-containing [1,3]oxazino[3,4-a]indolones and indolo[2,1-b]quinazolin-12(5H)-ones. A wide scope of substrates has been tolerated in moderate to good yields under mild and metal-free conditions.
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Shao et al. (2026) studied this question.
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