Synthesis of [n, 5]-spiroketals by ring enlargement of donor-acceptor-substituted cyclopropane derivatives

C Brand, G Rauch, M Zanoni, B Dittrich…

Index: Doubsky, Jan; Streinz, Ludvik; Saman, David; Zednik, Jiri; Koutek, Bohumir Organic Letters, 2004 , vol. 6, # 26 p. 4909 - 4911

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Citation Number: 51

Abstract

... Volume: Page: Digital Object Identifier (DOI). ... Organic ... 4, IBX (1.2 equiv), DMSO, rt, 8 h, 26. 5, IBX (1.2 equiv), DMSO, rt, 8 h, Ti(Oi-Pr) 4, - b. 6, IBX (1.2 equiv), DMSO, rt, 8 h, SnCl 4, - c. 7, IBX (1.2 equiv), DMSO, rt, 8 h, BF 3 ·OEt 2, 15. ...