In this work, based on the unique scaffold of indirubin, we synthesized 29 indirubin-3′-monoximes and preliminarily evaluated their antibacterial activities, especially against S. aureus.

A rapid and simple method was developed for the synthesis of diarylmethyl thioethers via a DABCO-catalyzed 1,6-conjugate addition reaction of para-quinone methides (p-QMs) with organosulfur reagents.

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A simple base-promoted [2 + 1] annulation of indolin-3-ones and bromosulfonium salts has been developed in this article. This strategy uses simple and easily prepared indolin-3-ones 1 as C1 synthons and bromosulfonium salts 2 as C2 synthons under mild reaction conditions, and 33 examples of C2spirocyclopropyl-indolin-3-ones were obtained with up to 99 % yield and > 20 : 1 dr.