𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A simple regioselective synthesis of ethyl 1,5-diarylpyrazole-3-carboxylates

✍ Scribed by William V. Murray; Michael P. Wachter


Book ID
112129384
Publisher
Journal of Heterocyclic Chemistry
Year
1989
Tongue
English
Weight
228 KB
Volume
26
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Synthesis of 1,2,4-triazines - XIV. Regi
✍ Tadashi Ohsumi; Hans Neunhoeffer 📂 Article 📅 1992 🏛 Elsevier Science 🌐 French ⚖ 542 KB

Ethyl 1,2,4-triazine-5-carboxylates 6 were prepared by heating N,N-dimethylaminomethyleneor ethoxymethylenehydrazones 5 with ammonium acetate in acetic acid at-100°C. NMR-studies confirmed the absence of their regio isomers (6-carboxylates), showing the high regioselectivity of this procedure. Rece

A simple synthesis of 5-ethoxycarbonyl-6
✍ Ahmet Şener; Hasan Genç; M. Kasimşener; Yüzüncü Yil 📂 Article 📅 2003 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 40 KB

## Abstract 4‐Ethoxycarbonyl‐5‐phenyl‐2,3‐dihydrofuran‐2,3‐dione **1** reacts with aldehydes __via__ the acylketene intermediate **2** giving the 1,3‐dioxin‐4‐ones **3a‐e** and the 1,4‐bis(5‐ethoxycarbonyl‐4‐oxo‐6‐phenyl‐4__H__‐1,3‐dioxin‐2‐yl)benzene **4**, and a one step reaction between dibenzoy