PtCl2??and PtCl4??Catalyzed Cycloisomerization of Polyunsaturated Precursors

J Marco??Contelles, N Arroyo, S Anjum…

Index: Marco-Contelles, Jose; Arroyo, Nieves; Anjum, Shazia; Mainetti, Emily; Marion, Nicolas; Cariou, Kevin; Lemiere, Gilles; Mouries, Virginie; Fensterbank, Louis; Malacria, Max European Journal of Organic Chemistry, 2006 , # 20 p. 4618 - 4633

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Citation Number: 32

Abstract

Abstract The PtCl 2-and PtCl 4-catalyzed cycloisomerization of polyunsaturated precursors with different O-protecting groups at the propargylic position is reported. The free hydroxy, O- (bromomethyl) dimethylsilyl, O-methyl and O-propenyl derivatives 1a–f have afforded mixtures of skeletal rearrangement products and/or polycyclic molecules incorporating a cyclopropyl ring system in variable chemical yields. Other parameters such as the ...