A C–H activation-based strategy has been developed for the synthesis of N-amino azaheterocycles. Rh(III)-catalyzed coupling of N-Boc hydrazones/N-Boc hydrazines with diazodiesters/diazoketoesters provides convenient access to synthetically and medicinally important compounds, N-amino isoquinolin-3-ones and N-amino indoles, by harnessing N-tert-butyloxycarbonyl (N-Boc) cleavage as an adaptable reactivity
Synthesis of Naphthoquinolizinones through Rh(III)-Catalyzed Double C(sp<sup>2</sup>)–H Bond Carbenoid Insertion and Annulation of 2-Aryl-3-cyanopyridines with α-Diazo Carbonyl Compounds
作者:Beibei Zhang、Bin Li、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.orglett.7b00839
日期:2017.5.5
and annulation of 2-aryl-3-cyanopyridines with α-diazo carbonyl compounds is presented. Through this cascade reaction, a series of naphthoquinolizinone derivatives with a large π-system were efficiently prepared. The reactions could selectively afford naphthoquinolizinones with either an amine or an amideunit attached on the 11-position depending on the nature of the solvent and the additive used
A Stereodivergent–Convergent Chiral Induction Mode in Atroposelective Access to Biaryls via Rhodium-Catalyzed C–H Bond Activation
作者:Panjie Hu、Bingxian Liu、Fen Wang、Ruijie Mi、Xiao-Xi Li、Xingwei Li
DOI:10.1021/acscatal.2c04292
日期:2022.11.18
Then, the other Rh–C(aryl) bond migratorily inserts into the ketone carbonyl group. Following this stereodetermining carbonyl insertion, an ester-chelated rhodium(III) alkoxide species bearing two poorly controlled chiral centers and a well-controlled C(sp2)–C(sp3) chiral axis is generated. The final product is delivered via stereoconvergent elimination of a rhodium(III) species with retention of the
Palladium-Catalyzed Cross-Coupling of Aryl or Vinyl Iodides with Ethyl Diazoacetate
作者:Cheng Peng、Jiajia Cheng、Jianbo Wang
DOI:10.1021/ja073010+
日期:2007.7.1
Pd(PPh3)(4)-catalyzed reaction between aryl or vinyl iodides and ethyl diazoacetate (EDA) leads to the formation of cross-coupling products in good yields.