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Cycloadditions of thienopyridazines and a thienopyridine with electron‐poor olefins and acetylenes as dienophiles are described. The nonisolable adducts undergo subsequent loss of hydrogen sulfide to give substituted phthalazines and substituted isoquinolines, respectively. © 1997 John Wiley & Sons, Inc.
Heteroatom Chemistry – Wiley
Published: Jan 1, 1997
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