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Direct condensation of carboxylic acids with polyethylene glycols catalyzed by Sc(OTf)3

✍ Scribed by S Chandrasekhar; S Shameem Sultana; Ch Narsihmulu; J.S Yadav; R Gree; J.C Guillemin

Book ID
104252216
Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
161 KB
Volume
43
Category
Article
ISSN
0040-4039

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✦ Synopsis

Esterification of soluble polymers by direct condensation of equimolar amounts of carboxylic acids with polyethylene glycols is achieved using catalytic Sc(OTf) 3 in toluene for the first time.

πŸ“œ SIMILAR VOLUMES

Boric Acid-Catalyzed Direct Condensation
Boric Acid-Catalyzed Direct Condensation of Carboxylic Acids with Benzene-1,2-diamine into Benzimidazoles
✍ Nenad MaraΕ‘; Marijan Kočevar πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 German βš– 265 KB

## Abstract The applicability of boric acid catalysis for the direct condensation of carboxylic acids with benzene‐1,2‐diamine to give 2‐substituted benzimidazoles was investigated. It was found that catalytic amounts (5–10β€…mol‐%) of boric acid efficiently promote the cyclocondensation of aliphatic