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Diazo coupling: an alternative method for the upper rim amination of thiacalix[4]arenes

✍ Scribed by Pavel Lhoták; Jiri Morávek; Ivan Stibor

Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
133 KB
Volume
43
Category
Article
ISSN
0040-4039

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📜 SIMILAR VOLUMES

A novel method for the upper rim alkoxy-
A novel method for the upper rim alkoxy-substitution of calix[4]arene via a bis(spirodienone) route
✍ Sreeja Thulasi; Ganga V. Bhagavathy; Jijy Eliyan; Luxmi R. Varma 📂 Article 📅 2009 🏛 Elsevier Science 🌐 French ⚖ 183 KB

A mild and efficient one-step procedure for the upper rim modification of calix[4]arene via a bis(spirodienone) is described. The bis(spirodienone) on reaction with alcohols in the presence of p-TSA affords mono-and 1,3-disubstituted alkoxy derivatives in moderate to good yields.