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Peng Z, Ragan JA, Colon-Cruz R, Conway BG, Cordi EM, Leeman K, Letendre LJ, Ping LJ, Sieser JE, Singer RA, Sluggett GW, Strohmeyer H, Vanderplas BC, Blunt J, Mawby N, Meldrum K, Taylor S. Synthesis of Filibuvir. Part II. Second-Generation Synthesis of a 6,6-Disubstituted 2H-Pyranone via Dieckmann Cyclization of a β-Acetoxy Ester. Org Process Res Dev 2013. [DOI: 10.1021/op400236r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhihui Peng
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - John A. Ragan
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Roberto Colon-Cruz
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Brian G. Conway
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Eric M. Cordi
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Kyle Leeman
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Leo J. Letendre
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Li-Jen Ping
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Janice E. Sieser
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Robert A. Singer
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Gregory W. Sluggett
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Holly Strohmeyer
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Brian C. Vanderplas
- Chemical Research & Development and ‡Analytical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut
| | - Jon Blunt
- Chemical Research & Development, Process Development Facility Ramsgate Road, Sandwich, Kent, United Kingdom
| | - Nicola Mawby
- Chemical Research & Development, Process Development Facility Ramsgate Road, Sandwich, Kent, United Kingdom
| | - Kevin Meldrum
- Chemical Research & Development, Process Development Facility Ramsgate Road, Sandwich, Kent, United Kingdom
| | - Stuart Taylor
- Chemical Research & Development, Process Development Facility Ramsgate Road, Sandwich, Kent, United Kingdom
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van Zijl AW, Szymanski W, López F, Minnaard AJ, Feringa BL. Catalytic Enantioselective Synthesis of Vicinal Dialkyl Arrays. J Org Chem 2008; 73:6994-7002. [DOI: 10.1021/jo8010649] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anthoni W. van Zijl
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Wiktor Szymanski
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Ferrnando López
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry, Faculty of Mathematics and Natural Sciences, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
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Davies HML, Beckwith REJ. Catalytic Asymmetric Reactions for Organic Synthesis: The Combined C−H Activation/Siloxy-Cope Rearrangement. J Org Chem 2004; 69:9241-7. [PMID: 15609962 DOI: 10.1021/jo048429m] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Tetrakis(N-[4-dodecylbenzenesulfonyl]-(L)-prolinate) dirhodium [Rh(2)(S-DOSP)(4)]-catalyzed decomposition of vinyldiazoacetates in the presence of allyl silyl ethers results in the formation of the direct C-H insertion product and the product derived from a combined C-H activation/siloxy-Cope rearrangement. Both products are formed with very high diastereoselectivity (>94% de) and high enantioselectvity (78-93% ee). Under thermal or microwave conditions, the direct C-H insertion product undergoes a siloxy-Cope rearrangement in a stereoselective manner.
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Affiliation(s)
- Huw M L Davies
- Department of Chemistry, University at Buffalo, State University of New York, New York 14260-3000, USA.
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Schneider C, Reese O. Domino Michael Aldol and Domino Michael Mannich Reactions: Highly Stereoselective Synthesis of Functionalized Cyclohexanes This work has been supported by the Deutsche Forschungsgemeinschaft (Schn 441/1-2), the Fonds der Chemischen Industrie (doctoral fellowship to O. R.) and Degussa Hüls AG. We thank Prof. L. Tietze for constant support. Angew Chem Int Ed Engl 2000; 39:2948-2950. [PMID: 11028020 DOI: 10.1002/1521-3773(20000818)39:16<2948::aid-anie2948>3.0.co;2-p] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- C Schneider
- Institut für Organische Chemie der Universität Tammannstrasse 2, 37077 Göttingen (Germany)
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