Results 31 to 40 of about 19,002,772 (320)
Copper-mediated oxidative C−H/N−H activations with alkynes by removable hydrazides
Beilstein Journal of Organic Chemistry, 2021 The efficient copper-mediated oxidative C–H alkynylation of benzhydrazides was accomplished with terminal alkynes. Thus, a heteroaromatic removable N-2-pyridylhydrazide allowed for domino C–H/N–H functionalization.
Feng Xiong +7 more
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Synthesis of Polysubstituted Ferrocenesulfoxides
Molecules, 2022 The purpose of the study is to design synthetic methodologies, especially directed deprotometalation using polar organometallic reagents, to access polysubstituted ferrocenesulfoxides.
Min Wen +6 more
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Imine as a linchpin approach for meta-C–H functionalization
Nature Communications, 2021 Site-selective C–H functionalization still faces some challenges, such as the introduction and removal of an appropriate directing group. Here, the authors introduce a temporary directing group for selective meta-C–H functionalization of 2 ...
Sukdev Bag +6 more
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Set-direct factorizations of groups [PDF]
Journal of Algebra, 2018 referee comments included, 19 ...
Levy, Dan, Maróti, Attila
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Distal Functionalization via Transition Metal Catalysis
Chemistry Proceedings, 2022 The ubiquitous presence of sp3 C−H bonds in natural feedstock makes them inexpensive, easily accessible, and attractive synthons for the preparation of common and/or complex molecular frameworks in biologically active natural products, pharmaceutics ...
Haibo Ge
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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
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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
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Grouping with Directed Relationships [PDF]
, 2001 Grouping is a global partitioning process that integrates local cues distributed over the entire image. We identify four types of pairwise relationships, attraction and repulsion, each of which can be symmetric or asymmetric. We represent these relationships with two directed graphs.
Stella X. Yu, Jianbo Shi
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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.
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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
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