✦ LIBER ✦

Asymmetric induction in intramolecular ene reactions of 1,7-dienes

✍ Scribed by Lutz F Tietze; Uwe Beifuss

Publisher: Elsevier Science
Year: 1986
Tongue: French
Weight: 239 KB
Volume: 27
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)84369-5

No coin nor oath required. For personal study only.

✦ Synopsis

Chiral, double-activated enophiles in 1,7-dienes 6a -d undergo thermal and Lewis-acid catalyzed intramolecular ene reactions yielding trans-cyclohexanes 7a-d and 8a-d.

📜 SIMILAR VOLUMES

Intramolecular ene reactions, III. Diast

Intramolecular ene reactions, III. Diastereoselective formation of cyclohexanes by intramolecular ene reactions of 1,7-dienes

✍ Tietze, Lutz F. ;Beifuß, Uwe 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 962 KB

The I .74iencs 3ac with a double-activated cnophile moiety undzrgo thermal and zinc bromide catalyzed intramolecular ene rcactions lcading to rrurts-1.2-disubstitutcd cyclohexanes 4a-c in up to 8 9 9 ~ yield, highly diastcrcoselectively. The synthesis of cyclulicxaim from 1.7-diencs has not been fca

Non-Induced, Highly Diastereoselective I

Non-Induced, Highly Diastereoselective Intramolecular Ene Reactions of 1,7-Dienes to trans-1,2-Disubstituted Cyclohexanes

✍ Prof. Dr. Lutz F. Tietze; Dipl.-Chem. Uwe Beifuss 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 259 KB 👁 1 views

film): v=260 (m), 460 (w), 555 (vs), 800 (w), 845 (w). 910 (m), 942 (m). 1073 (s), 1090 (sh), I122 (w), 1226 (w), 1260 (w), 1342 (m), 1410 (in), 1712 (va), 1756(m), 1822 (w), 2915 (w),2990(w), 3410(w)cm-'.-3b: yellow-

Asymmetric Induction in Intramolecular R

Asymmetric Induction in Intramolecular Reactions of Carbenoids

✍ Prof. Dr. W. Kirmse; Dipl.-Chem. H. Arold 📂 Article 📅 1968 🏛 John Wiley and Sons 🌐 English ⚖ 248 KB

Asymmetric Synthesis by the Intramolecul

Asymmetric Synthesis by the Intramolecular Haloetherification Reaction of Ene Acetal: Discrimination of Prochiral Dienes in Cyclohexane Systems.

✍ Hiromichi Fujioka; Naoyuki Kotoku; Yoshinari Sawama; Hidetoshi Kitagawa; Yusuke 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 33 KB

1,2-Induction in intramolecular diene cy

1,2-Induction in intramolecular diene cyclozirconation: Control of relative configuration

✍ Douglass F. Taber; James P. Louey 📂 Article 📅 1995 🏛 Elsevier Science 🌐 French ⚖ 594 KB

Lewis acid-catalyzed intramolecular asym

Lewis acid-catalyzed intramolecular asymmetric ene reactions of chiral vinyl sulfoxide

✍ Kunio Hiroi; Masayuki Umemura 📂 Article 📅 1992 🏛 Elsevier Science 🌐 French ⚖ 233 KB

Ablracf: A chid a-cyanovinyl sulfoxide served as an efficient chiral enophile in a Lewis acid-catalyzed intramolecular ene reaction. Use of diethylaluminum chloride as a catalyst provided extremely high stereoselectivity in this ene reaction. Based on the stereochemical results obtained, a mechanist