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Whitney L. Johnson
Researcher at University of Wisconsin-Madison
Publications - 12
Citations - 447
Whitney L. Johnson is an academic researcher from University of Wisconsin-Madison. The author has contributed to research in topics: Cycloaddition & Nitrile. The author has an hindex of 7, co-authored 12 publications receiving 419 citations.
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Journal ArticleDOI
A Rhodium(I)-Catalyzed Demethylation−Cyclization of o-Anisole-Substituted Ynamides in the Synthesis of Chiral 2-Amido Benzofurans§
Jossian Oppenheimer,Whitney L. Johnson,Michael R. Tracey,Richard P. Hsung,Peiyuan Yao,Renhe Liu,Kang Zhao +6 more
TL;DR: A Rh(I)-catalyzed demethylation-cyclization sequence for a direct transformation of o-anisole-substituted ynamides to benzofurans is described here.
Journal ArticleDOI
Synthesis of α-Keto-Imides via Oxidation of Ynamides
Ziyad F. Al-Rashid,Whitney L. Johnson,Richard P. Hsung,Yonggang Wei,Peiyuan Yao,Renhei Liu,Kang Zhao +6 more
TL;DR: A de novo preparation of alpha-keto-imides via ynamide oxidation is described, and the RuO2-NaIO4 protocol provides a novel entry to the vicinal tricarbonyl motif via oxidation of push-pull ynamides, and imido acylsilanes from silyl-substituted y Namides.
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Stereochemical control of both C-C and C-N axial chirality in the synthesis of chiral N,O-biaryls.
TL;DR: This work demonstrates a unique concept of stereochemical control of both the C-C and C-N axial chirality and provides an approach to the synthesis of chiral N,O-biaryls as well as chiral anilides.
Journal ArticleDOI
N-allyl-N-sulfonyl ynamides as synthetic precursors to amidines and vinylogous amidines. An unexpected N-to-C 1,3-sulfonyl shift in nitrile synthesis.
Kyle A. DeKorver,Whitney L. Johnson,Yu Zhang,Richard P. Hsung,Huifang Dai,Jun Deng,Andrew G. Lohse,Yanshi Zhang +7 more
TL;DR: A detailed study of amidine synthesis from N-allyl-N-sulfonyl ynamides is described here, and another set of tandem sigmatropic rearrangements are uncovered, leading to vinyl imidate formation.
Journal ArticleDOI
A Highly Stereoselective Synthesis of Chiral α-Amino-β-Lactams Via the Kinugasa Reaction Employing Ynamides
TL;DR: A mechanistic model is illustrated here to rationalize the observed diastereoselectivity, which depends on both the initial [3 + 2] cycloaddition step and the subsequent protonation for which both are highly selective.