Výsledky vyhledávání - "Naohiko Yoshikai"

Akademický článek

Three-component N-alkenylation of azoles with alkynes and iodine(III) electrophile: synthesis of multisubstituted N-vinylazoles

Autor: Jun Kikuchi, Roi Nakajima, Naohiko Yoshikai

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 891-897 (2024)

A stereoselective N-alkenylation of azoles with alkynes and iodine(III) electrophile is reported. The reaction between various azoles and internal alkynes is mediated by benziodoxole triflate as the electrophile in a trans-fashion, affording azole-be

Externí odkaz: https://doaj.org/article/0a21c40fe87249c4a2ee3a33b32863f8

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Akademický článek

Synthesis of triphenylene-fused phosphole oxides via C–H functionalizations

Autor: Md. Shafiqur Rahman, Naohiko Yoshikai

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 16, Iss 1, Pp 524-529 (2020)

The synthesis of triphenylene-fused phosphole oxides has been achieved through two distinct C–H functionalization reactions as key steps. The phosphole ring was constructed by a three-component coupling of 3-(methoxymethoxy)phenylzinc chloride, an

Externí odkaz: https://doaj.org/article/7e70104ef38a45ba93447bd1d7f443e2

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Akademický článek

Cobalt-catalyzed directed C–H alkenylation of pivalophenone N–H imine with alkenyl phosphates

Autor: Wengang Xu, Naohiko Yoshikai

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 709-715 (2018)

A cobalt–N-heterocyclic carbene (NHC) catalyst efficiently promotes an ortho C–H alkenylation reaction of pivalophenone N–H imine with an alkenyl phosphate. The reaction tolerates various substituted pivalophenone N–H imines as well as cyclic

Externí odkaz: https://doaj.org/article/86eed65de058445785b2fd414f8e87ef

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Akademický článek

C2-Alkylation of N-pyrimidylindole with vinylsilane via cobalt-catalyzed C–H bond activation

Autor: Zhenhua Ding, Naohiko Yoshikai

Publikováno v: Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 1536-1542 (2012)

Direct C2-alkylation of an indole bearing a readily removable N-pyrimidyl group with a vinylsilane was achieved by using a cobalt catalyst generated in situ from CoBr2, bathocuproine, and cyclohexylmagnesium bromide. The reaction allows coupling betw

Externí odkaz: https://doaj.org/article/71f5ce115c2c424a8e9febeb94ab3e41

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