Rh(III)-Catalyzed Tandem C–H Allylation and Oxidative Cyclization of Anilides: A New Entry to Indoles
摘要:
Rh-III-catalyzed tandem C-H allylation and oxidative cyclization of anilides with allyl carbonates in the presence of a slight excess of AgSbF6 salt and Cu(OAc)(2) as oxidant affords easy, economical access to important bioactive 2-methylindoles. The new reaction supports a wide range of functional groups on the anilide substrate. A possible mechanism is proposed as a basis for its rational further development.
Cobalt/Rhodium-Catalyzed Diversified Amidation of Benzocyclobutenols via C–C Cleavage under Catalyst and Condition Control
作者:Xingwei Li、Runze Zhang、Zisong Qi、Junwei Li、Lingheng Kong
DOI:10.1021/acs.orglett.3c01788
日期:2023.7.14
rhodium(III)-catalyzed regio- and chemoselective amidation of benzocyclobutenols has been realized using dioxazolone as the amidating reagent to afford three classes of C–N-coupled products via β-carbon elimination of the benzocyclobutenol. The Co(III)-catalyzed coupling initially afforded an isolable o-(N-acylamino)arylmethyl ketone, which could further cyclize to the corresponding indole derivatives under
Iron-Catalyzed Oxidative Rearrangement of Cyclopropanone Hemiaminals: General Access to Pyrroloindolones from Indoles
作者:Roger Machín Rivera、Zack R. Ferrin、Vincent N. G. Lindsay
DOI:10.1021/acs.orglett.4c01528
日期:2024.6.7
approach to medicinally relevant pyrroloindolones and related fused heterocycles is reported via the diastereoselective N-addition of unprotected indoles to readily accessible cyclopropanone equivalents. The resulting stable hemiaminals are shown to smoothly rearrange to pyrroloindolones in mild conditions using Fe(III) catalysis in the presence of inexpensive ammonium persulfate as a stoichiometric oxidant