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. 2020 Jul 21;85(16):10670–10680. doi: 10.1021/acs.joc.0c01235

Scheme 4. Preparation of the Indanedithiones Starting from the Corresponding Substituted 1,3-Indanediones, Applying (a) Conventional Heating and (b) Microwave Irradiation.

Scheme 4

Reaction conditions: (i) P2S5 (4 equiv), LR (4 equiv), toluene, 110 °C, o/n; (ii) LR (8 equiv), toluene, 110 °C, 4 h, microwave irradiation.