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Cyclisation of 2-methylbut-3-yn-2-ol. Part II. Cyclisation to cyclo-octatetraene derivatives

✍ Scribed by Chini, P.; Palladino, N.; Santambrogio, A.

Book ID: 115531754
Publisher: The Royal Society of Chemistry
Year: 1967
Tongue: English
Weight: 597 KB
Volume: 0
Category: Article
ISSN: 0022-4952
DOI: 10.1039/j39670000836

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## Abstract The condensation of 5‐methyl‐thiophen‐2‐aldehyde with dimethyl succinate in the presence of potassium t‐butoxide or sodium hydride gave predominantly (E)‐3‐methoxy‐carbonyl‐4‐(5′‐methyl‐2′‐thienyl)‐but‐3‐enoic acid **1a**, whose configuration is proved by cyclisation with sodium acetate