Tetrahedron Letters p. 8583 - 8586 (2007)
Update date:2022-08-16
Topics:
D'yakonov, Vladimir A.
Finkelshtein, Evgeniy Sh.
Ibragimov, Askhat G.
For the first time cycloalumination of methylenecyclobutane with the aid of Et3Al in the presence of Cp2ZrCl2 leading to 6-ethyl-6-aluminaspiro[3.4]octane has been realized. The latter, without isolation, was converted into spiro[3.3]heptane, 6-thiaspiro[3.4]octane and also spiro[3.4]octan-6-ol and 6-spiro[3.4]octyl formate with high yields and selectivity.
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