2532-74-3Relevant articles and documents
Direct synthesis of dihydrobenzo[a]carbazoles via palladium-catalyzed domino annulation of indoles
Jafarpour, Farnaz,Hazrati, Hamideh
, p. 363 - 367 (2010)
A straightforward one-step synthesis of annulated indoles via palladium-catalyzed, norbornene-mediated sequential intermolecular aryl ortho-alkylation/intramolecular indole C-H activation has been devised. This method provides an efficient route to a wide variety of substituted 6,11-dihydro-5H-benzo[a]carbazoles from readily accessible 3-bromoalkylindoles and iodoarenes.
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Eiter,Svierak
, p. 1453,1463 (1952)
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Exploration of a KI-catalyzed oxidation system for direct construction of bispyrrolidino[2,3-: B] indolines and the total synthesis of (+)-WIN 64821
Chen, Si-Kai,Yang, Ju-Song,Dai, Kun-Long,Zhang, Fu-Min,Zhang, Xiao-Ming,Tu, Yong-Qiang
supporting information, p. 121 - 124 (2019/12/30)
A facile and environmentally benign KI(cat.)/NaBO3·4H2O oxidation system has been developed for the tandem oxidative aminocyclization/coupling of tryptamines, affording a series of 3a,3a′-bispyrrolidino[2,3-b]indolines with high efficiency (up to 94% yield). This reaction features an electrophilic "I+" mechanism, which is importantly quite different from and milder than the typical radical-involving process, and can be readily amplified for the total synthesis of (+)-WIN 64821.
Rapid One-Pot Access to Unique 3,4-Dihydrothiopyrano[3,4-b]indol-1(9H)-imines via Bi(OTf)3-Catalysed Tandem Friedel–Crafts Alkylation/Thia-Michael Addition
Dethe, Dattatraya H.,Boda, Vijay Kumar,Mandal, Anupam
supporting information, p. 5417 - 5421 (2018/10/20)
A highly efficient and atom economical one-pot annulation strategy for novel tetrahydrothiopyrano[3,4-b]indoles is presented. This protocol involves a Bi(OTf)3 catalyzed tandem Friedel–Crafts alkylation and intramolecular thia-Michael addition reactions to furnish target molecules in an efficient manner. The method works effectively on substrates with unprotected indoles and also it is successfully employed to make tetrahydrothiepino[3,4-b]indoles. The scaffolds synthesized are diverse and first of the kind. The reaction is practically simple with broad substrate scope and vast functional group compatibility.