Yuyang Dong
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View article: SCAN: Semantic Document Layout Analysis for Textual and Visual Retrieval-Augmented Generation
SCAN: Semantic Document Layout Analysis for Textual and Visual Retrieval-Augmented Generation Open
With the increasing adoption of Large Language Models (LLMs) and Vision-Language Models (VLMs), rich document analysis technologies for applications like Retrieval-Augmented Generation (RAG) and visual RAG are gaining significant attention…
View article: Cu-catalyzed enantioconvergent deborylative alkynylation
Cu-catalyzed enantioconvergent deborylative alkynylation Open
A Cu-catalyzed deborylative alkynylation protocol is presented to directly convert racemic alkylboronic esters into α-chiral alkynes.
View article: CuH-Catalyzed Regio- and Enantioselective Formal Hydroformylation of Vinyl Arenes
CuH-Catalyzed Regio- and Enantioselective Formal Hydroformylation of Vinyl Arenes Open
A highly enantioselective formal hydroformylation of vinyl arenes enabled by copper hydride (CuH) catalysis is reported. Key to the success of the method was the use of the mild Lewis acid zinc triflate to promote the formation of oxocarbe…
View article: Stereoselective Synthesis of Trisubstituted Alkenes via Copper Hydride-Catalyzed Alkyne Hydroalkylation
Stereoselective Synthesis of Trisubstituted Alkenes via Copper Hydride-Catalyzed Alkyne Hydroalkylation Open
Alkenes are ubiquitous in organic chemistry, yet many classes of alkenes remain challenging to access by current synthetic methodology. Herein, we report a copper hydride-catalyzed approach for the synthesis of Z-configured trisubst…
View article: CCDC 2157585: Experimental Crystal Structure Determination
CCDC 2157585: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Copper Hydride-Catalyzed Enantioselective Olefin Hydromethylation
Copper Hydride-Catalyzed Enantioselective Olefin Hydromethylation Open
The enantioselective installation of a methyl group onto a small molecule can result in the significant modification of its biological properties. While hydroalkylation of olefins represents an attractive approach to introduce alkyl substi…
View article: Copper Hydride-Catalyzed Enantioselective Olefin Hydromethylation
Copper Hydride-Catalyzed Enantioselective Olefin Hydromethylation Open
The enantioselective installation of a methyl group onto a small molecule can result in the significant modification of its biological properties. While hydroalkylation of olefins represents an attractive approach to introduce alkyl substi…
View article: Enantioselective Hydrocarbamoylation of Alkenes
Enantioselective Hydrocarbamoylation of Alkenes Open
The asymmetric hydroaminocarbonylation of olefins represents a straightforward approach for the synthesis of enantioenriched amides, but is hampered by the necessity to employ CO gas, often at elevated pressures. We herein describe, as an …
View article: Enantioselective Hydrocarbamoylation of Alkenes
Enantioselective Hydrocarbamoylation of Alkenes Open
The asymmetric hydroaminocarbonylation of olefins represents a straightforward approach for the synthesis of enantioenriched amides, but is hampered by the necessity to employ CO gas, often at elevated pressures. We herein describe, as an …
View article: Confronting the Challenging Asymmetric Carbonyl 1,2-Addition Using Vinyl Heteroarene Pronucleophiles: Ligand-Controlled Regiodivergent Processes through a Dearomatized Allyl–Cu Species
Confronting the Challenging Asymmetric Carbonyl 1,2-Addition Using Vinyl Heteroarene Pronucleophiles: Ligand-Controlled Regiodivergent Processes through a Dearomatized Allyl–Cu Species Open
The selective reductive coupling of vinyl heteroarenes with aldehydes and ketones represents a versatile approach for the rapid construction of enantiomerically enriched secondary and tertiary alcohols, respectively. Herein, we demonstrate…
View article: Confronting the Challenging Asymmetric Addition of Vinyl Arene Pronucleophiles into Ketones: Ligand-Controlled Regiodivergent Processes Through a Dearomatized Allyl-Cu Species
Confronting the Challenging Asymmetric Addition of Vinyl Arene Pronucleophiles into Ketones: Ligand-Controlled Regiodivergent Processes Through a Dearomatized Allyl-Cu Species Open
The selective reductive coupling of vinyl arenes and ketones represents a versatile approach for the rapid construction of enantiomerically enriched tertiary alcohols. Herein, we demonstrate a CuH-catalyzed regiodivergent coupling of vinyl…
View article: CCDC 1949234: Experimental Crystal Structure Determination
CCDC 1949234: Experimental Crystal Structure Determination Open
View article: CCDC 1949233: Experimental Crystal Structure Determination
CCDC 1949233: Experimental Crystal Structure Determination Open
View article: Confronting the Challenging Asymmetric Addition of Vinyl Arene Pronucleophiles into Ketones: Ligand-Controlled Regiodivergent Processes Through a Dearomatized Allyl-Cu Species
Confronting the Challenging Asymmetric Addition of Vinyl Arene Pronucleophiles into Ketones: Ligand-Controlled Regiodivergent Processes Through a Dearomatized Allyl-Cu Species Open
The selective reductive coupling of vinyl arenes and ketones represents a versatile approach for the rapid construction of enantiomerically enriched tertiary alcohols. Herein, we demonstrate a CuH-catalyzed regiodivergent coupling of vinyl…
View article: O-Heterocycle Synthesis via Intramolecular C–H Alkoxylation Catalyzed by Iron Acetylacetonate
O-Heterocycle Synthesis via Intramolecular C–H Alkoxylation Catalyzed by Iron Acetylacetonate Open
Intramolecular alkoxylation of C-H bonds can rapidly introduce structural and functional group complexities into seemingly simple or inert precursors. The transformation is particularly important due to the ubiquitous presence of tetrahydr…
View article: Enantioselective C–H Amination Catalyzed by Nickel Iminyl Complexes Supported by Anionic Bisoxazoline (BOX) Ligands
Enantioselective C–H Amination Catalyzed by Nickel Iminyl Complexes Supported by Anionic Bisoxazoline (BOX) Ligands Open
The trityl-substituted bisoxazoline (TrHBOX) was prepared as a chiral analogue to a previously reported nickel dipyrrin system capable of ring-closing amination catalysis. Ligand metalation with divalent NiI2(py)…
View article: Revealing redox isomerism in trichromium imides by anomalous diffraction
Revealing redox isomerism in trichromium imides by anomalous diffraction Open
Application of high-resolution Multiwavelength Anomalous Diffraction (MAD) allows the assignment of localized, partly delocalized, and fully delocalized oxidation in a series of trichromium imide isomers.
View article: Efficient Joinable Table Discovery in Data Lakes: A High-Dimensional Similarity-Based Approach
Efficient Joinable Table Discovery in Data Lakes: A High-Dimensional Similarity-Based Approach Open
Finding joinable tables in data lakes is key procedure in many applications such as data integration, data augmentation, data analysis, and data market. Traditional approaches that find equi-joinable tables are unable to deal with misspell…
View article: Efficient C–H Amination Catalysis Using Nickel-Dipyrrin Complexes
Efficient C–H Amination Catalysis Using Nickel-Dipyrrin Complexes Open
A dipyrrin-supported nickel catalyst (AdFL)Ni(py) (AdFL: 1,9-di(1-adamantyl)-5-perfluorophenyldipyrrin; py: pyridine) displays productive intramolecular C-H bond amination to afford N-heterocyclic products using aliph…
View article: Learning with Unsure Responses
Learning with Unsure Responses Open
Many annotation systems provide to add an unsure option in the labels, because the annotators have different expertise, and they may not have enough confidence to choose a label for some assigned instances. However, all the existing approa…
View article: Synthesis and electronic structure studies of a Cr-imido redox series
Synthesis and electronic structure studies of a Cr-imido redox series Open
We report a family of dipyrrinato Cr imido complexes in oxidation states ranging from CrIII to CrV showcasing the influence of the weak-field dipyrrin on the electronic structure and coordination geometries of the Cr …
View article: Efficient and selective alkene hydrosilation promoted by weak, double Si–H activation at an iron center
Efficient and selective alkene hydrosilation promoted by weak, double Si–H activation at an iron center Open
Cationic iron complexes [Cp*(iPr2MeP)FeH2SiHR]+, generated and characterized in solution, are very efficient catalysts for the hydrosilation of terminal alkenes and internal alkynes by primary si…
View article: Synthesis, characterization and C–H amination reactivity of nickel iminyl complexes
Synthesis, characterization and C–H amination reactivity of nickel iminyl complexes Open
Nickel-supported nitrenoids exhibit iminyl character, as determined by multi-edge XAS and TDDFT analysis, demonstrate efficacy for C–H activation and nitrene transfer chemistry.
View article: A Study on Rank-aware Query Processing for Multidimensional Data
A Study on Rank-aware Query Processing for Multidimensional Data Open
筑波大学
View article: Efficient Methods for Aggregate Reverse Rank Queries
Efficient Methods for Aggregate Reverse Rank Queries Open
Given two data sets of user preferences and product attributes in addition to a set of query products, the aggregate reverse rank (ARR) query returns top-k users who regard the given query products as the highest aggregate rank than other …
View article: Grid-Index Algorithm for Reverse Rank Queries
Grid-Index Algorithm for Reverse Rank Queries Open
View article: CCDC 1403119: Experimental Crystal Structure Determination
CCDC 1403119: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1403116: Experimental Crystal Structure Determination
CCDC 1403116: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1403117: Experimental Crystal Structure Determination
CCDC 1403117: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 1403118: Experimental Crystal Structure Determination
CCDC 1403118: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …