✦ LIBER ✦

Dipolar cycloaddition reactions on a soluble polymer-supported dipolarophile: Synthesis of sugar-derived triazoles

✍ Scribed by Martin Moore; Peter Norris

Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 200 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)01472-5

No coin nor oath required. For personal study only.

✦ Synopsis

An organic-soluble polymer-supported alkyne has been employed as a dipolarophile in 1,3-dipolar cycloaddition reactions with azides. Several carbohydrate-derived azides react to form mixtures of regioisomeric triazoles in good to high yields, and the thus formed heterocycles are freed from the polymer under mild conditions using NaBH4 in ethanol.

📜 SIMILAR VOLUMES

Stereoselective synthesis of highly func

Stereoselective synthesis of highly functionalised pyrrolidines via 1,3-dipolar cycloaddition reactions on a solid support

✍ Sean P. Hollinshead 📂 Article 📅 1996 🏛 Elsevier Science 🌐 French ⚖ 261 KB

[1,3]-Dipolar intramolecular nitrone ole

[1,3]-Dipolar intramolecular nitrone olefin cycloaddition reaction of a sugar-derived α,β-unsaturated ester: a new diastereo- and regioselective synthesis of an aminocyclopentitol

✍ Santosh M Jachak; Navnath P Karche; Dilip D Dhavale 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 92 KB

The reaction of hemiacetal 2a, from the sugar derived a,b-unsaturated ester 1a, with N-benzylhydroxylamine hydrochloride in situ generates an N-benzylnitrone as a 1,3-dipole, which spontaneously undergoes diastereo-and regioselective intramolecular nitrone olefin cycloaddition to afford a hydroxy fu

‘Off-template site’ intramolecular nitro

‘Off-template site’ intramolecular nitrone cycloaddition (INC) reactions on sugar-derived allylic ethers—a study on the substituent effect and synthesis of furano-pyrans

✍ G.V.M Sharma; K Ravinder Reddy; A Ravi Sankar; A.C Kunwar 📂 Article 📅 2001 🏛 Elsevier Science 🌐 French ⚖ 79 KB

A Versatile One-Pot Synthesis of 4-Aryl-

A Versatile One-Pot Synthesis of 4-Aryl-1,5-disubstituted 1,2,3-Triazoles via 1,3-Dipolar Cycloaddition Followed by Negishi Reaction under New Conditions.

✍ Atsushi Akao; Takayuki Tsuritani; Satoshi Kii; Kimihiko Sato; Nobuaki Nobuyama; 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 28 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.