4.4 Article

Formal dipolar cycloaddition of allylsilanes to o-quinonoid compounds:: a convenient route to benzofused and spirofused heterocycles

Journal

TETRAHEDRON LETTERS
Volume 43, Issue 30, Pages 5349-5351

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(02)00927-9

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Formal dipolar cycloaddition of allylsilanes to o-benzoquitiones proceeds in a [2+3] manner affording dihydrobenzofurans. With isatins [3+2] annulation of the keto carbonyl occurs yielding spiro-oxindole derivatives. (C) 2002 Elsevier Science Ltd. All rights reserved.

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