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A simple synthesis of 1-aminophosphonic acids from 1-hydroxyiminophosphonates with NaBH4 in the presence of transition metal compounds

✍ Scribed by Ayhan S. Demir; Cihangir Tanyeli; Özge Şeşenoǧlu; Şerafettin Demiç; Özden Özel Evin


Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
182 KB
Volume
37
Category
Article
ISSN
0040-4039

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Copper-Free Sonogashira Coupling of Acid
✍ Pravin R. Likhar; M. S. Subhas; Moumita Roy; Sarabindu Roy; M. Lakshmi Kantam 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 German ⚖ 157 KB 👁 1 views

## Abstract Pd/C is used as an efficient catalyst for the copper‐free __Sonogashira__ coupling of acid chlorides and terminal alkynes to afford ynones in high yields (__Tables 1__ and __3__). Cyclization of (2‐methoxyaryl)‐substituted ynones induced by I~2~/ammonium cerium(IV) nitrate (CAN) at room