Kinoshita, Hidenori Hirai, Nobuyoshi Miura, Katsukiyo Diisobutylaluminum Hydride Promoted Cyclization of <i>o</i>‑(Trimethylsilylethynyl)styrenes to Indenes The reaction of <i>o</i>-(trimethylsilylethynyl)­styrenes with diisobutylaluminum hydride (DIBAL-H) provides 2-trimethylsilyl-1<i>H</i>-indenes efficiently. The cyclization mechanism involves regioselective hydroalumination of the alkynyl moiety, geometrical isomerization of the alkenylaluminums formed, and intramolecular carboalumination. With substrates bearing a 2-(trimethylsilyl)­ethenyl group (R<sup>1</sup> = Me<sub>3</sub>Si, R<sup>2</sup> = R<sup>3</sup> = H), bis-silylated benzofulvenes are obtained upon treatment of the reaction mixture with an excess amount of benzaldehyde. intramolecular carboalumination;R 1;R 3;alkenylaluminum;alkynyl moiety;benzofulvene;reaction mixture;3Si R 2;trimethylsilyl;Diisobutylaluminum Hydride Promoted Cyclization;cyclization mechanism;substrate;benzaldehyde;diisobutylaluminum hydride;regioselective hydroalumination;IndenesThe reaction;isomerization 2014-09-05
    https://acs.figshare.com/articles/dataset/Diisobutylaluminum_Hydride_Promoted_Cyclization_of_i_o_i_Trimethylsilylethynyl_styrenes_to_Indenes/2257435
10.1021/jo501383v.s002