Application of 58-61-7, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 58-61-7, Name is Adenosine, SMILES is O[C@H]1[C@H](N2C=NC3=C(N)N=CN=C23)O[C@H](CO)[C@H]1O, belongs to indole-building-block compound. In a article, author is Chen, Shuyou, introduce new discover of the category.
The development of a rational strategy to achieve the complete regioselectivity and the capability to switch regioselectivity is an appealing, yet challenging, puzzle in transition-metal-catalyzed oxidative Ar-H/Ar-H cross-coupling. Disclosed herein is an iridium-catalyzed C2/C4 regioselective C-H heteroarylation of indoles with the help of a pivaloyl group at the C3 position. The judicious choice of the catalytic systems allows the C2-heteroarylation of indole via a concerted metalation-deprotonation (CMD) process and the C4-heteroarylation via a trimolecular electrophilic substitution (S(E)3) pathway. The oxidants Cu(OAc)(2)H2O and Ag2O are demonstrated to play a vital role in the C2/C4 regioselectivity. In this Article, a heteroaryl-Ir(III)-heteroaryl complex prior to reductive elimination is successfully isolated and characterized, which represents the first example of capturing the bis(hetero)aryl metallic intermediate in oxidative Ar-H/Ar-H cross-coupling. The regiodivergent heteroarylation of indoles developed herein provides an opportunity to rapidly assemble diverse C4- and C2-heteroarylated indoles.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles