Cascade Dehydrogenative Hydroboration for the Synthesis of Azaborabenzofulvenes
摘要:
Tandem dehydrogenative hydroboration has been established to be highly effective in the synthesis of BN isosteres of benzofulvene and derivatives. The scope of this synthetic method is applicable to a variety of substrates. Spectroscopic and computational studies indicate that the new azaborabenzofulvenes have similar electronic properties as their carbonaceous analogues.
active: A silica‐supported “compact” phosphane, Silica‐SMAP, can be used in the Pd‐catalyzedborylation of aryl chlorides or bromides with bis(pinacolato)diboron (see scheme). The Silica‐SMAP/Pd system significantly expands the substrate scope of the borylation toward sterically and electronically challenging arylhalides.
Anomalous Reactivity of Silylborane: Transition-Metal-Free Boryl Substitution of Aryl, Alkenyl, and Alkyl Halides with Silylborane/Alkoxy Base Systems
作者:Eiji Yamamoto、Kiyotaka Izumi、Yuko Horita、Hajime Ito
DOI:10.1021/ja309578k
日期:2012.12.12
An unexpected borylation of organic halides with a silyborane in the presence of an alkoxy base has been observed. This formal nucleophilic boryl substitution can be applied to a broad range of substrates with high functional group compatibility. Even stericallyhindered aryl bromides afforded the corresponding boryl compounds in high yields. Preliminary mechanistic studies indicated that this boryl
A mild carbon–boron bond formation from diaryliodonium salts
作者:N. Miralles、R. M. Romero、E. Fernández、K. Muñiz
DOI:10.1039/c5cc04944j
日期:——
Metal-free borylation of diaryliodonium salts with diboron reagents toward formation of aryl boronic esters and concomitant two-step C–C coupling of both aryl groups of the initial diaryliodonium reagent.
Zinc-Mediated Transmetalation as a Route to Anionic <i>N</i>-Heterocyclic Olefin Complexes in the p-Block
作者:Ian C. Watson、Michael J. Ferguson、Eric Rivard
DOI:10.1021/acs.inorgchem.1c02961
日期:2021.12.6
tunability and strong σ- and π-electron donating abilities. In this study, the new two-coordinate zinc complex (MeIPrCH)2Zn (MeIPrCH = [(MeCNDipp)2C═CH]−, Dipp = 2,6-diisopropylphenyl) is shown to participate in a broad range of metathesis reactions with main group element-based halides and hydrides. In the case of the group 14 halides, Cl2E·dioxane (E = Ge and Sn), transmetalation occurs to form dinuclear