✦ LIBER ✦

A conjunctive diquinane synthesis using a free-radical catalyzed intramolecular [3 + 2] methylenecyclopentane annulation

✍ Scribed by Chad C. Huval; Daniel A. Singleton

Book ID: 104215558
Publisher: Elsevier Science
Year: 1994
Tongue: French
Weight: 155 KB
Volume: 35
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)75791-1

No coin nor oath required. For personal study only.

✦ Synopsis

Alkylation of the metbylenecyclopmpane 1 with 4-alkynyl iodides followed by a free-radical mediated intramolecular methylenecyclopentaoe annularion annposes a quick and eff~cienl new diquinane synthesis. A multitude of [Zatom + Zatom] cycloaddition-type methods for cyclopentane ring synthesis have been developed in recent years, with diverse applicability and limitations. Intramolecular cycloadditions are a powerful strategy for the synthesis of polycyclics, and intramolecular versions of the [3 + 21 cyclopentane

📜 SIMILAR VOLUMES

A diquinane synthesis using a novel cati

A diquinane synthesis using a novel cation radical-mediated intramolecular [3+2] cycloaddition of cyclopropyl sulfides

✍ Yoshiji Takemoto; Syun-ichirou Furuse; Hiroki Koike; Taiichi Ohra; Chuzo Iwata; 📂 Article 📅 1995 🏛 Elsevier Science 🌐 French ⚖ 239 KB

Bi(OTf)3-catalyzed solvent-free synthesi

Bi(OTf)3-catalyzed solvent-free synthesis of pyrano[3,2-c]coumarins through a tandem addition/annulation reaction between chalcones and 4-hydroxycoumarins

✍ Gohain, Mukut; van Tonder, Johannes H.; Bezuidenhoudt, Barend C.B. 📂 Article 📅 2013 🏛 Elsevier Science 🌐 French ⚖ 520 KB

Solvent free aza-annulation using 4-dime

Solvent free aza-annulation using 4-dimethylamino 2-aza-1,3-dienes as γ-dielectrophiles for a new synthesis of imidazole-4-carboxylates

✍ Stephane Jouneau; Jean Pierre Bazureau 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 126 KB

4-Dimethylamino 2-aza-l,3-diene~ 2a,b derived respectively from methyl N-(Iethoxyethyliden)glycinate la and methyl N-[bis-(methylthio)methylene]glycinate lb react with hydrazines 3a,b and amines 3e,d to give the corresponding new imidazole-4-carboxylates 5(a-f) by a solvent-free aza-annulation.

Free Radical-Mediated Aryl Amination and

Free Radical-Mediated Aryl Amination and Its Use in a Convergent [3 + 2] Strategy for Enantioselective Indoline α-Amino Acid Synthesis.

✍ Rajesh Viswanathan; Erode N. Prabhakaran; Michael A. Plotkin; Jeffrey N. Johnsto 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 51 KB 👁 1 views

Free Radical-Mediated Aryl Amination and

Free Radical-Mediated Aryl Amination and Its Use in a Convergent [3 + 2] Strategy for Enantioselective Indoline α-Amino Acid Synthesis

✍ Viswanathan, Rajesh; Prabhakaran, Erode N.; Plotkin, Michael A.; Johnston, Jeffr 📂 Article 📅 2003 🏛 American Chemical Society 🌐 English ⚖ 111 KB

ChemInform Abstract: Solvent-Free Aza-An

ChemInform Abstract: Solvent-Free Aza-Annulation Using 4-Dimethylamino 2-Aza-1,3-dienes as γ-Dielectrophiles for a New Synthesis of Imidazole-4-carboxylates.

✍ Stephane Jouneau; Jean Pierre Bazureau 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 1 views