Addition of carbon radicals to 4′,5′-unsaturated uracilnucleosides by the use of organoselenium reagents: A new stereoselective entry to CC bond formation at the 5′-position
1,3‐Difunctionalization of Imino‐Carbenes via Rhodium‐Catalyzed Reactions of Triazoles with Acyl Selenides
作者:Fang Li、Chao Pei、Calogero Quaranta、Rene M. Koenigs
DOI:10.1002/adsc.202100629
日期:2021.9.21
rhodium-catalyzed reaction of triazoles with acyl selenides. Under thermal reaction conditions and in the presence of a rhodium catalyst, a rapid 1,3-difunctionalization reaction occurs to provide valuable α-seleno enamides with high stereoselectivity and broad functional group tolerance, which was demonstrated in 35 examples with up to 95% yield. Computational calculations suggest a reaction pathway that
Palladium/Norbornene-Catalyzed <i>Ortho</i>-Acylation and <i>Ipso</i>-Selenation via C(O)–Se Bond Cleavage: Synthesis of α-Carbonyl Selane
作者:Xiaozhong Fan、Zhenhua Gu
DOI:10.1021/acs.orglett.8b00112
日期:2018.2.16
A palladium/norbornene-catalyzed synthetic method that combines selective ortho C-H bond activation with sequential reactions to form complex selenide compounds has been developed. The C(O)-Se bond in selenoates is successfully cleaved, and various kinds of alpha-carbonyl selanes were synthesized in decent to excellent yields. The reaction has good functional group tolerance and broad substrate scope.
HARAGUCHI, KAZUHIRO;TANAKA, HIROMICHI;MIYASAKA, TADASHI, TETRAHEDRON LETT., 31,(1990) N, C. 227-230