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13 results on '"Ogikubo, Junichi"'

6. meso-Arylporpholactones and their Reduction Products

Author

Brückner, Christian, primary, Ogikubo, Junichi, additional, McCarthy, Jason R., additional, Akhigbe, Joshua, additional, Hyland, Michael A., additional, Daddario, Pedro, additional, Worlinsky, Jill L., additional, Zeller, Matthias, additional, Engle, James T., additional, Ziegler, Christopher J., additional, Ranaghan, Matthew J., additional, Sandberg, Megan N., additional, and Birge, Robert R., additional

Published
2012
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7. meso-Aryl-3-alkyl-2-oxachlorins

Author

Ogikubo, Junichi, primary, Meehan, Eileen, additional, Engle, James T., additional, Ziegler, Christopher J., additional, and Brückner, Christian, additional

Published
2012
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9. Zinc-Catalyzed Allenylations of Aldehydes and Ketones

Author

Fandrick, Daniel R., primary, Saha, Jaideep, additional, Fandrick, Keith R., additional, Sanyal, Sanjit, additional, Ogikubo, Junichi, additional, Lee, Heewon, additional, Roschangar, Frank, additional, Song, Jinhua J., additional, and Senanayake, Chris H., additional

Published
2011
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13. Copper-Catalyst-Controlled Site-Selective Allenylation of Ketones and Aldehydes with Propargyl Boronates.

Author

Fandrick, Keith R., Ogikubo, Junichi, Fandrick, Daniel R., Patel, Nitinchandra D., Saha, Jaideep, Lee, Heewon, Ma, Shengli, Grinberg, Nelu, Busacca, Carl A., and Senanayake, Chris H.

Abstract

A practical and highly site-selective copper-PhBPE-catalyst-controlled allenylation with propargyl boronates has been developed. The methodology has shown to be tolerant of diverse ketones and aldehydes providing the allenyl adducts in high selectivity. The BPE ligand and boronate substituents were shown to direct the site selectivity for which either propargyl or allenyl adducts can be acquired in high selectivity. A model is proposed that explains the origin of the site selectivity. [ABSTRACT FROM AUTHOR]

Published
2012
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