Results 21 to 30 of about 9,246,440 (304)
Green Synthesis and Catalysis, 2023 Transition-metal-catalyzed C–H bond functionalization has attracted tremendous attention as an increasingly important protocol for the construction of C–C and C–X bonds.
Jian Zhang +5 more
doaj +1 more source
Directing-Group-Free Palladium-Catalyzed C–H Arylation of Aldoxime Using Oxime’s Umpolung Properties
, 2022 Alkyl aldoximes without a directing group undergo palladium-catalyzed C–H arylation with aryl bromides to afford alkyl aryl ketoximes in moderate to high yields.
Nobuyoshi Morita (1608451) +3 more
core +1 more source
A directed $d$-group that is not a group of divisibility [PDF]
Czechoslovak Mathematical Journal, 1984 The reviewer [Czech. Math. J. 32(107), 77-89 (1982; Zbl 0499.06013)] asked if there exists a directed ordered abelian group which admits a multivalued addition \(\oplus\) satisfying the axioms of d-groups but which is not a group of divisibility of an integral domain. In this note the author constructs such an example.
openaire +2 more sources
Antea Group Archeologie 2020/137
, 2022 In juli en september 2020 heeft Antea Group in opdracht van BNVB Projects B.V. een archeologisch onderzoek uitgevoerd voor het plangebied ‘Grutterij 7-9’ te Amstelveen, gemeente Amstelveen.
Looveren, V. van (Antea Group)
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Directing-Group-Assisted Manganese-Catalyzed Cyclopropanation of Indoles
, 2019 The first manganese-catalyzed cyclopropanation of indoles is reported in moderate to excellent yield with methyl-2-diazo-2-arylacetates. This new strategy involved acetyl (COCH3) as the directing group and exhibited exceptional functional group tolerance.
Pratip K. Dutta (6205169) +3 more
core +2 more sources
Directing-Group-Enabled Cycloaddition of Azides and Alkynes toward Functionalized Triazoles
, 2020 Herein, we report a directing-group-enabled Huisgen cycloaddition of azides and alkynes for the synthesis of functionalized triazoles in which the triazene group could act as a directing group to enable this regioselective [3 + 2] cycloaddition and ...
Chen Zhang (66790) +9 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2016 The synthesis of β-arylated alkylamides via alkyl C–H bond arylation has been realized by means of direct one-pot reactions of acyl chlorides, aryl iodides and 8-aminoquinoline. Depending on the structure of the starting materials, both single and double
Yunyun Liu +3 more
doaj +1 more source
Transient Directing Group enabled C3-(sp2)-H alkenylation of Five Membered Heterocyclic Aldehydes: An Easy Access to Mechanochromic Luminogens [PDF]
, 2023 The palladium (II) catalyzed direct C3-(sp2)-H alkenylation of five membered heterocyclic aldehydes has been developed using 3-aminobutanoic acid as a catalytic transient directing group.
Javed Y., Shaikh +4 more
core +2 more sources
N-Benzo[c][1,2,5]thiazol-4-yl-3-trifluoromethylbenzamide
Molbank, 2019 The title compound, N-benzo[c][1,2,5]thiazol-4-yl-3-trifluoromethylbenzamide (1) was synthesized by reacting 3-trifluoromethylbenzoyl chloride (4) and 4-aminobenzo[c][1,2,5]thiadiazole (5). The compound was characterized by various spectroscopic methods (
Hamad H. Al Mamari +2 more
doaj +1 more source
Catalytic Undirected Meta‐Selective C–H Borylation of Metallocenes
Advanced Science, 2023 Metallocenes are privileged backbones in the fields of synthetic chemistry, catalysis, polymer science, etc. Direct C–H functionalization is undoubtedly the simplest approach for tuning the properties of metallocenes.
Hao Zheng +6 more
doaj +1 more source