✦ LIBER ✦

New developments in asymmetric Bradsher cycloadditions: use of chiral dienes

✍ Scribed by Dominique Urban; Eric Duval; Yves Langlois

Book ID: 104211255
Publisher: Elsevier Science
Year: 2000
Tongue: French
Weight: 120 KB
Volume: 41
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)01708-1

No coin nor oath required. For personal study only.

✦ Synopsis

Several serinol derivatives have been prepared and condensed following the Zincke reaction with 2,7-naphthyridine. The resulting naphthyridinium salts were engaged in Bradsher cycloadditions with enol ethers and afforded tetracyclic adducts, potential synthetic precursors of manzamine A alkaloid.

📜 SIMILAR VOLUMES

ChemInform Abstract: New Developments in

ChemInform Abstract: New Developments in Asymmetric Bradsher Cycloadditions: Use of Chiral Dienes.

✍ Dominique Urban; Eric Duval; Yves Langlois 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 29 KB 👁 1 views

Preparation and use of chiral (Z)-enol e

Preparation and use of chiral (Z)-enol ethers in asymmetric bradsher cycloaddition

✍ Olivia Sageot; Daphnée Monteux; Yves Langlois; Claude Riche; Angèle Chiaroni 📂 Article 📅 1996 🏛 Elsevier Science 🌐 French ⚖ 218 KB

ChemInform Abstract: Preparation and Use

ChemInform Abstract: Preparation and Use of Chiral (Z)-Enol Ethers in Asymmetric Bradsher Cycloaddition.

✍ O. SAGEOT; D. MONTEUX; Y. LANGLOIS; C. RICHE; A. CHIARONI 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 29 KB

Axially Chiral Triazoloisoquinolin-3-yli

Axially Chiral Triazoloisoquinolin-3-ylidene Ligands in Gold(I)-Catalyzed Asymmetric Intermolecular (4 + 2) Cycloadditions of Allenamides and Dienes

✍ Francos, Javier; Grande-Carmona, Francisca; Faustino, Hélio; Iglesias-Sigüenza, 📂 Article 📅 2012 🏛 American Chemical Society 🌐 English ⚖ 635 KB

Development of Catalytic Asymmetric 1,4-

Development of Catalytic Asymmetric 1,4-Addition and [3 + 2] Cycloaddition Reactions Using Chiral Calcium Complexes

✍ Tsubogo, Tetsu; Saito, Susumu; Seki, Kazutaka; Yamashita, Yasuhiro; Kobayashi, S 📂 Article 📅 2008 🏛 American Chemical Society 🌐 English ⚖ 445 KB

New Studies and a Reinvestigation on [4+

New Studies and a Reinvestigation on [4+2] Cycloadditions of (−)-Thebaine: Asymmetrical Diels-Alder Reactions with a Conformationally Fixed Chiral Diene

✍ Pindur, Ulf ;Keilhofer, Diana 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 878 KB

## Abstract Some novel Diels‐Alder reactions of the opium alkaloid (−)‐thebaine (1) as an electron‐rich diene and a reinvestigation of its reactions with cyclic and acyclic dienophiles are described. The π‐facial selectivity has been studied on the basis of structural analyses of the cycloadducts.