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An Efficient Synthesis of Novel 1,3-Oxazolo[4,5-d]pyridazinones.

✍ Scribed by Eugene B. Frolov; Frederick J. Lakner; Alexandre V. Khvat; Alexandre V. Ivachtchenko

Publisher
John Wiley and Sons
Year
2004
Weight
123 KB
Volume
35
Category
Article
ISSN
0931-7597

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## Abstract Reaction of chloropyridazin‐3‐one **1, 5** and **10** with catechol in the presence of potassium carbonate gave the corresponding [1,4]benzodioxino[2,3‐e and/or 2,3‐d]pyridazinones **2, 7, 8** and **11**.