Search Results - "Kim, Nana"

Structurally Diverse Bench‐Stable Nickel(0) Pre‐Catalysts: A Practical Toolkit for In Situ Ligation Protocols by Tran, Van T., Kim, Nana, Rubel, Camille Z., Wu, Xiangyu, Kang, Taeho, Jankins, Tanner C., Li, Zi‐Qi, Joannou, Matthew V., Ayers, Sloan, Gembicky, Milan, Bailey, Jake, Sturgell, Emily J., Sanchez, Brittany B., Chen, Jason S., Lin, Song, Eastgate, Martin D., Wisniewski, Steven R., Engle, Keary M.

“…A flurry of recent research has centered on harnessing the power of nickel catalysis in organic synthesis. These efforts have been bolstered by contemporaneous…”
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Conditional Dependence across Slow and Fast Item Responses: With a Latent Space Item Response Modeling Approach by Kim, Nana, Jeon, Minjeong, Partchev, Ivailo

“…There recently have been many studies examining conditional dependence between response accuracy and response times in cognitive tests. While most previous…”
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Nickel-Catalyzed 1,2-Carboamination of Alkenyl Alcohols by Kang, Taeho, Kim, Nana, Cheng, Peter T, Zhang, Hao, Foo, Klement, Engle, Keary M

“…An alcohol-directed, nickel-catalyzed three-component umpolung carboamination of unactivated alkenes with aryl/alkenylboronic esters and electrophilic…”
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Ionization of gold (γ-methoxy)vinyl complexes generates reactive gold vinyl carbene complexes† †Electronic supplementary information (ESI) available: Experimental procedures, characterization data, and scans of NMR spectra. CCDC 1897597. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c9sc01574d by Kim, Nana, Widenhoefer, Ross A.

“…Highly reactive cationic gold vinyl carbene/allylic cation complexes are generated in solution via γ-ionization of gold vinyl complexes. Cationic gold vinyl…”
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A Mixture IRTree Model for Extreme Response Style: Accounting for Response Process Uncertainty by Kim, Nana, Bolt, Daniel M.

“…This paper presents a mixture item response tree (IRTree) model for extreme response style. Unlike traditional applications of single IRTree models, a mixture…”
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Synthesis, Characterization, and Reactivity of Cationic Gold Diarylallenylidene Complexes by Kim, Nana, Widenhoefer, Ross A.

“…Methoxide ion from gold acetylide complexes of the form (L)Au[η1‐C≡CC(OMe)ArAr′] (L=IPr, P(tBu)2(ortho‐biphenyl); Ar/Ar′=C6H4X where X=H, Cl, Me, OMe) with…”
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Evaluating Psychometric Differences Between Fast Versus Slow Responses on Rating Scale Items by Kim, Nana, Bolt, Daniel M.

“…Some previous studies suggest that response times (RTs) on rating scale items can be informative about the content trait, but a more recent study suggests they…”
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Ionization of gold (γ-methoxy)vinyl complexes generates reactive gold vinyl carbene complexes by Kim, Nana, Widenhoefer, Ross A

“…Cationic gold vinyl carbene/allylic cation complexes of the form ( E )-[(L)AuC(H)C(H)CAr 2 ] + OTf − {L = IPr, Ar = Ph [( E )- 5a ], L = IPr, Ar = 4-C 6 H 4…”
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Formation of Cyclopropanes via Activation of (γ-Methoxy)alkyl Gold(I) Complexes with Lewis Acids by Kim, Nana, Widenhoefer, Ross A

“…Treatment of the gold 3-methoxy-3-phenylpropyl complex (P)­AuCH2CH2CH­(OMe)­Ph [P = P­(t-Bu)2 o-biphenyl] with AlCl3 at −78 °C led to the immediate (≤5 min)…”
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Noncompensatory MIRT For Passage-Based Tests by Kim, Nana, Bolt, Daniel M., Wollack, James

“…We consider a multidimensional noncompensatory approach for binary items in passage-based tests. The passage-based noncompensatory model (PB-NM) emphasizes two…”
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Sulfonamide Directivity Enables Ni-Catalyzed 1,2-Diarylation of Diverse Alkenyl Amines by Apolinar, Omar, Tran, Van T, Kim, Nana, Schmidt, Michael A, Derosa, Joseph, Engle, Keary M

“…1,2-Diarylation of alkenyl sulfonamides with aryl iodides and aryl boronic esters under nickel catalysis is reported. The developed method tolerates coupling…”
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Psychometric Modeling Approaches for Understanding Item Response Process in Cognitive and Noncognitive Assessments by Kim, Nana

“…In educational and psychological assessments, attending to item response process can be useful in understanding and improving the validity of measurement. This…”
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A Sterically Tuned Directing Auxiliary Promotes Catalytic 1,2‐Carbofluorination of Alkenyl Carbonyl Compounds by Liu, Zhonglin, Oxtoby, Lucas J., Sun, Juntao, Li, Zi‐Qi, Kim, Nana, Davies, Geraint H. M., Engle, Keary M.

“…The site‐selective palladium‐catalyzed three‐component coupling of unactivated alkenyl carbonyl compounds, aryl‐ or alkenylboronic acids, and…”
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(CAAC)Copper Catalysis Enables Regioselective Three-Component Carboboration of Terminal Alkynes by Gao, Yang, Kim, Nana, Mendoza, Skyler D., Yazdani, Sima, Faria Vieira, Andre, Liu, Mingyu, Kendrick, Aaron, Grotjahn, Douglas B., Bertrand, Guy, Jazzar, Rodolphe, Engle, Keary M.

“…Cyclic­(alkyl)­(amino)­carbene (CAAC) ligands are found to perturb regioselectivity of the copper-catalyzed carboboration of terminal alkynes, favoring the…”
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Unexpected Skeletal Rearrangement in the Gold(I)/Silver(I)-Catalyzed Conversion of 7‑Aryl-1,6-enynes to Bicyclo[3.2.0]hept-6-enes via Hidden Brønsted Acid Catalysis by Kim, Nana, Brooner, Rachel E. M, Widenhoefer, Ross A

“…Cycloaddition of an isotopically labeled 7-phenyl-1,6-enyne catalyzed by a mixture of LAuCl [L = P­(t-Bu)2 o-biphenyl)] and AgSbF6 forms the corresponding…”
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A Psychometric Model for Discrete-Option Multiple-Choice Items by Bolt, Daniel M., Kim, Nana, Wollack, James, Pan, Yiqin, Eckerly, Carol, Sowles, John

“…Discrete-option multiple-choice (DOMC) items differ from traditional multiple-choice (MC) items in the sequential administration of response options (up to…”
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Mechanistic Analysis of Gold(I) Catalysis through Generation and Direct Observation of Reactive Intermediate Analogues by Kim, Nana

“…Cationic gold carbene complexes have attracted significant attention, being postulated as intermediates in a range of gold-catalyzed transformations…”
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Regulation of Diastereoselectivity in the Carbocyclization of Allenyl (S)‑N-tert-Butylsulfinimines through a Three-Component Assembly by Kim, Jihyun, Kim, Hyuna, Kim, Nana, Yu, Chan-Mo

“…Allenyl sulfinimines can be stereoselectively cyclized with hexamethylditin under palladium catalysis conditions followed by a selection of additives for an…”
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Synthesis, Characterization, and Reactivity of Cationic Gold Diarylallenylidene Complexes by Kim, Nana, Widenhoefer, Ross A.

“…Methoxide ion from gold acetylide complexes of the form (L)Au[η1‐C≡CC(OMe)ArAr′] (L=IPr, P(tBu)2(ortho‐biphenyl); Ar/Ar′=C6H4X where X=H, Cl, Me, OMe) with…”
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A Sterically Tuned Directing Auxiliary Promotes Catalytic 1,2‐Carbofluorination of Alkenyl Carbonyl Compounds by Liu, Zhonglin, Oxtoby, Lucas J., Sun, Juntao, Li, Zi‐Qi, Kim, Nana, Davies, Geraint H. M., Engle, Keary M.

“…The site‐selective palladium‐catalyzed three‐component coupling of unactivated alkenyl carbonyl compounds, aryl‐ or alkenylboronic acids, and…”
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