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The [3 + 2] cycloaddition route to 5-carbomethoxy-4h-1,2,3-triazolo[1,5-a][1]benzazepines from baylis-hillman acetates of 2-azidobenzaldehydes

✍ Scribed by Young Seok Song; Kee-Jung Lee

Publisher
Journal of Heterocyclic Chemistry
Year
2006
Tongue
English
Weight
261 KB
Volume
43
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

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A new, simple synthesis of 5‐carbomethoxy‐4__H__‐1,2,3‐triazolo[1,5‐a][1]benzazepines from the reaction of several Baylis‐Hillman acetates of 2‐azidobenzaldehydes with alkynide Grignard reagents such as phenylethynyl‐, 1‐propynyl‐ and ethynylmagnesium bromides followed by cycloaddition reaction has been described.

📜 SIMILAR VOLUMES

Synthesis of 4H-tetrazolo[1,5-a][1]benza
Synthesis of 4H-tetrazolo[1,5-a][1]benzazepines from the baylis-hillman adducts of 2-azidobenzaldehyde
✍ Chang Hoon Lee; Young Seok Song; Hyun In Cho; Je Woo Yang; Kee-Jung Lee 📂 Article 📅 2003 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 38 KB

## Abstract Novel heterocycles, 4__H__‐tetrazolo[1,5‐__a__][1]benzazepines **6** were prepared by the intramolecular 1,3‐dipolar cycloaddition reaction of azidophenylcyanomethyl compounds **5.** The latter were readily obtained from 2‐azidobenzaldehyde through the Baylis‐Hillman adducts **3** follo

Synthesis of 5H-1,2,3-triazolo[4,3-a][2]
Synthesis of 5H-1,2,3-triazolo[4,3-a][2]benzazepines from the baylis-hillman adducts of 2-alkynylbenzaldehydes
✍ Seung Ho Ko; Kee-Jung Lee 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 141 KB

## Abstract The facile synthesis of 5__H__‐1,2,3‐triazolo[4,3‐__a__][2]benzazepines **5a‐d** by the intramolecular 1,3‐dipolar cycloaddition reaction of 2‐alkynylphenylallyl azides **4a‐d** is described. The latter were readily obtained from 2‐alkynylbenzaldehydes **1a‐d** through the Baylis‐Hillma