Cover Feature: Phosphazene Base t Bu‐P4 Catalyzed Methoxy–Alkoxy Exchange Reaction on (Hetero)Arenes (Chem. Eur. J. 24/2019)
نویسندگان
چکیده
منابع مشابه
Phosphazene base-catalyzed condensation of trimethylsilylacetate with carbonyl compounds.
The t-Bu-P4 base was found to be an excellent catalyst for the condensation of trimethylsilylacetate or trimethylacetonitrile with carbonyl compounds to form functionalized alkenes and beta-enaminoesters were also synthesized by the condensation with formanilides.
متن کاملPhosphazene base-promoted halogen-zinc exchange reaction of aryl iodides using diethylzinc.
The use of catalytic t-Bu-P4 base dramatically improved the performance of halogen-zinc exchange of aryl iodides, and the arylzinc derivatives were functionalized under copper-free reaction conditions.
متن کاملPhosphazene base-promoted functionalization of aryltrimethylsilanes.
The activation of Ar-Si bonds in aryltrimethylsilane was investigated using a catalytic amount of t-Bu-P4 base and selective functionalizations of aryltrimethylsilanes in the absence of strong electron withdrawing groups on the aromatic rings were accomplished.
متن کاملPdCl2-catalyzed efficient allylation and benzylation of heteroarenes under ligand, base/acid, and additive-free conditions.
We present a PdCl(2)-catalyzed protocol for highly efficient allylation and benzylation of a rich variety of N-, O-, and S-containing heteroarenes under base/acid, additive, and ligand-free conditions. The method represents the very few examples for simple, universally applicable, clean, and atom-efficient functionalization of heteroarenes.
متن کاملCopper-catalyzed direct alkylation of heteroarenes.
An efficient and broadly applicable process is reported for the direct alkylation of C-H bonds in heteroarenes, privileged scaffolds in many areas of science. This reaction is based on the copper-catalyzed addition of alkyl radicals generated from activated secondary and tertiary alkyl bromides to a wide range of arenes, including furans, thiophenes, pyrroles, and their benzo-fused derivatives,...
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ژورنال
عنوان ژورنال: Chemistry – A European Journal
سال: 2019
ISSN: 0947-6539,1521-3765
DOI: 10.1002/chem.201901244