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Synthesis of New 9-Methylene Analogues of Retinoids.

✍ Scribed by Alain Valla; Zo Andriamialisoa; Dominique Cartier; Roger Labia; Pierre Potier

Publisher
John Wiley and Sons
Year
2006
Weight
21 KB
Volume
37
Category
Article
ISSN
0931-7597

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## Abstract Reaction of α‐ and β‐ionones 1 and 2 with dialkylformamide/phosphorus oxychloride affords enamines 6 and 7 along with the expected chloro derivatives 4 and 5. Reaction of 6a with hydrazines, hydroxylamine and guanidine furnished pyrazoles, isoxazole, pyrimidine 8–10 showing the potentia