Ligand-Promoted Alkylation of C(sp<sup>3</sup>)–H and C(sp<sup>2</sup>)–H Bonds

Zhu, Ru‐Yi; He, Jian; Wang, Xiaochen; Yu, Jin‐Quan

doi:10.1021/ja508165a

Cited by 172 publications

(76 citation statements)

References 35 publications

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“…5,6 Our group also demonstrated recently that β-C(sp 3 )-H bonds of the N-terminal amino acid in dipeptide compounds can be effectively functionalized with the coordination of the C-terminal amino acid. 7 …”

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confidence: 91%

β-C(sp³)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

Toba

Trần

et al. 2015

Org. Lett.

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confidence: 91%

β-C(sp³)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

Toba

Trần

et al. 2015

Org. Lett.

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“…42 In 2014, a palladium(II)-catalyzed sp 3 -carbon-hydrogen alkylation of simple amides with various alkyl iodides was developed by Yu's group (Scheme 38). 43 This alkylation reaction could be applied to the preparation of nonnatural amino acids and geometrically controlled tri-and tetrasubstituted acrylic acids. 43 …”

Section: Scheme 34 Palladium-catalyzed Intermolecular Arylation Of Spmentioning

confidence: 99%

Advances in Transition-Metal-Catalyzed Direct sp3-Carbon–Hydrogen Bond Functionalization

Zhang

Wang

Xing

2015

Synlett

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Transition-metal-catalyzed direct carbon-hydrogen bond functionalization has made significant advances in the field of carbonhydrogen bond activation over the past decades. This methodology has the potential to be used in many different areas of chemistry; for example, it can provide an opportunity for the synthesis of various kinds of complex compounds. This account mainly focuses on recent advances in transition-metal-catalyzed direct sp 3 -carbon-hydrogen bond functionalization to form carbon-carbon bonds. 1 Introduction 2 Carbon-Carbon Bond Formation via Direct sp 3 -Carbon-Hydrogen Bond Functionalization 2.1 Coupling of sp 3 -Carbon-Hydrogen and sp-Carbon-Hydrogen Bonds 2.2 Coupling of sp 3 -Carbon-Hydrogen and sp 2 -Carbon-Hydrogen Bonds 2.3 Coupling of sp 3 -Carbon-Hydrogen and sp 3 -Carbon-Hydrogen Bonds 2.4 Coupling of sp 3 -Carbon-Hydrogen and C-X Bonds 3 Conclusion Key words transition metals, catalysis, carbon-carbon bond formations, cross-dehydrogenative coupling, direct bond functionalizations Carbon-Carbon Bond Formation via Direct sp 3 -Carbon-Hydrogen Bond FunctionalizationThe oxidative coupling of two different carbon-hydrogen bonds was termed cross-dehydrogenative coupling (CDC) by Li's group 4 in 2004, and it has become an increasing field of interest. In the past decade, a growing number of efficient procedures and novel methods have been introduced. These methods make the connection of sp 3 -carbonhydrogen with sp-carbon-hydrogen, sp 2 -carbon-hydrogen, sp 3 -carbon-hydrogen, and C-X bonds a reality (Scheme 1). 4,5 However, the development of chemo-, regio-, and stereoselective sp 3 -carbon-carbon bond formation reactions is still one of the most challenging tasks in organic synthesis.

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“…[13] proposed a method for recognition of uneven terrain using 3D laser scanner. [23] proposed a novel but complex method for real-time obstacle detection and recognition, where several key obstacle characteristics are identified based on image information and geometric information using support vector machine (SVM). [14] proposed a novel algorithm to qualitatively categorize the terrain type in real-time, using high fidelity sensors.…”

Section: Introductionmentioning

confidence: 99%

A Rapid Recognition of Impassable Terrain for Mobile Robots with Low Cost Range Finder Based on Hypotheses Testing Theory

Gao

Liu

et al. 2017

INT J COMPUT COMMUN

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The recognition of impassable terrain plays a vital role in the motion planning of a mobile robot, which generally relies on expensive sensors such as stereo vision cameras. This paper proposes a rapid impassable terrain recognition algorithm based on hypotheses testing theory using low-cost range finders with different diffusion angles. In this algorithm, a slope estimation model using two range finders mounted on different heights is first established, where the influence of the diffusion angle of the range sensor is considered. To deal with inaccurate measuring from low cost range finders, the hypothesis testing theory is then applied to judge whether there is an impassible terrain approaching, where the historical slope estimation results are treated as a sample set of the same slope, and the judgement of impassible terrain is then made based on the sampling set rather than the concurrent slope estimation. So the robot is only required to count the number of slope estimation that support the determination of a terrain as being impassible, and the judgement is confirmed only when that number is larger than a precisely designed threshold value. Then the stable recognition for impassable terrain would be acquired while the risk of wrong judgement is limited. The experiments' results indicate that this algorithm can provide a reliable recognition of impassable terrain using lower cost range finders with different diffusion angles with minimal computation.

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Ligand-Promoted Alkylation of C(sp³)–H and C(sp²)–H Bonds

Cited by 172 publications

References 35 publications

β-C(sp³)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

β-C(sp³)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

Advances in Transition-Metal-Catalyzed Direct sp3-Carbon–Hydrogen Bond Functionalization

A Rapid Recognition of Impassable Terrain for Mobile Robots with Low Cost Range Finder Based on Hypotheses Testing Theory

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Ligand-Promoted Alkylation of C(sp3)–H and C(sp2)–H Bonds

Cited by 172 publications

References 35 publications

β-C(sp3)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

β-C(sp3)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

Advances in Transition-Metal-Catalyzed Direct sp3-Carbon–Hydrogen Bond Functionalization

A Rapid Recognition of Impassable Terrain for Mobile Robots with Low Cost Range Finder Based on Hypotheses Testing Theory

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Ligand-Promoted Alkylation of C(sp³)–H and C(sp²)–H Bonds

β-C(sp³)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group

β-C(sp³)–H Arylation of α-Hydroxy Acid Derivatives Utilizing Amino Acid as a Directing Group