Cycloadditions of 3-aryl-l,2.4,5-tetrazines la-o with ethynyltributyltin 5 occur with high regioselectivity to yield 3-aryl-5-tributylstannyl-pyridazines 9-23 in 71-95% yield. Moreover, the stannanes obtained could be utilized as starting materials for the preparation of various 3,5-allsubstituted p
β¦ LIBER β¦
ChemInform Abstract: Synthesis of 3,5-Disubstituted Pyridazines by Regioselective [4 + 2] Cycloadditions with Ethynyltributyltin and Subsequent Replacement of the Organotin Substituent.
β Scribed by J. SAUER; D. K. HELDMANN
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 35 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0931-7597
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