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Unexpected synthesis of 1,6-dioxadecalins by desulfonylation of phenylsulfonyl [4,5] spiroketals

✍ Scribed by Juan C Carretero; Nuria Díaz; Ma Luisa Molina; Javier Rojo


Book ID
103403433
Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
207 KB
Volume
37
Category
Article
ISSN
0040-4039

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Spiroketal equilibration: Interconversio
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Acid-catalyzed equilibration of spiroketals 5SHp6 and 55Haj3 involves a two stage process whereby the 1,6-dioxaspiro]4.4]nonanes can be equilibrated under mild conditions to a pair of 1,6\_dioxaspiro[45]decanes with preservation of the adjacent C-20 methyl stereocenter. Under more forcing conditions