An article Michael Addition of Indoles to Enones Catalyzed by a Cationic Iron Salt WOS:000605598700002 published article about CONJUGATE ADDITION; 1,4-ADDITION; ALKYLATION; PYRROLE; ARYLSILOXANES; COMPLEXES; CHLORIDE; ACIDS in [Inishi, Tsukasa; Hirata, Goki; Nishikata, Takashi] Yamaguchi Univ, Grad Sch Sci & Engn, 2-16-1 Tokiwadai, Ube, Yamaguchi 7558611, Japan in 2021.0, Cited 27.0. The Name is Chalcone. Through research, I have a further understanding and discovery of 94-41-7. Recommanded Product: 94-41-7
Indoles are one of the most valuable nucleophiles in Michael additions catalyzed by a proper Lewis acid. In this paper, we found that a cationic iron salt is effective to carry out the Michael addition of indoles. beta-Mono- and disubstituted enones reacted smoothly with indoles under our conditions. The cationic iron catalyst is very active, and the maximum TON was up to 425. Moreover, cationic iron-catalyzed conditions enabled a chemoselective Michael addition of a substrate possessing both enone and alpha,beta-unsaturated ester moieties.
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Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com