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New Silicon-Mediated, Sequential Ring Expansions of n -Sized 2-Cycloalkenones into Hydroxyolefinic n + m + p Medium-Sized Lactones: Short Synthesis of (−)-Phoracantholide-J

✍ Scribed by Posner, Gary H.; Hatcher, Mark A.; Maio, William A.

Book ID: 127324814
Publisher: American Chemical Society
Year: 2005
Tongue: English
Weight: 68 KB
Volume: 7
Category: Article
ISSN: 1523-7060
DOI: 10.1021/ol051854x

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New Silicon-Mediated, Sequential Ring Ex

New Silicon-Mediated, Sequential Ring Expansions of n-Sized 2-Cycloalkenones into Hydroxyolefinic n + m + p Medium-Sized Lactones: Short Synthesis of (-)-Phoracantholide-J.

✍ Gary H. Posner; Mark A. Hatcher; William A. Maio 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 9 KB

New silicon-mediated ring expansion of n

New silicon-mediated ring expansion of n-sized conjugated cycloalkenones into homoallylic n+3 lactones

✍ Mark A. Hatcher; Kristina Borstnik; Gary H. Posner 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 256 KB

New Silicon-Mediated Ring Expansion of n

New Silicon-Mediated Ring Expansion of n-Sized Conjugated Cycloalkenones into Homoallylic [n + 3] Lactones.

✍ Mark A. Hatcher; Kristina Borstnik; Gary H. Posner 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 143 KB 👁 1 views

## Abstract For Abstract see ChemInform Abstract in Full Text.

New synthetic methodology for ring expan

New synthetic methodology for ring expansion of n-sized conjugated cycloalkenones into homoallylic n+3 lactones: 3-step synthesis of fragrant phoracantholide

✍ Gary H Posner; Qiang Wang; Bethany A Halford; Jeffrey S Elias; John P Maxwell 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 74 KB

Under the influence of Lewis acidic boron trifluoride-diethyl etherate, epoxides are activated sufficiently to undergo rapid nucleophilic opening by ketone enolate ions at -78°C, forming useful g-lactols. Application of this protocol to n+3 ring expansion features one-flask, multicomponent, sequent

ChemInform Abstract: New Synthetic Metho

ChemInform Abstract: New Synthetic Methodology for Ring Expansion of n-Sized Conjugated Cycloalkenones into Homoallylic [n + 3] Lactones: Three-Step Synthesis of Fragrant Phoracantholide.

✍ Gary H. Posner; Qiang Wang; Bethany A. Halford; Jeffrey S. Elias; John P. Maxwel 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 37 KB