Platinum-Catalyzed Bis-Germylation of Alkynes with Organodigermanes and Cyclic Oligogermanes.
…, T Wada, K Suzuki, W Hatanaka, Y Nishiyama…
Index: Mochida, Kunio; Wada, Tohru; Suzuki, Kaoru; Hatanaka, Wakako; Nishiyama, Yuriko; Nanjo, Masato; Sekine, Akiko; Ohashi, Yuji; Sakamoto, Masato; Yamamoto, Akio Bulletin of the Chemical Society of Japan, 2001 , vol. 74, # 1 p. 123 - 137
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Citation Number: 34
Abstract
Hexamethyldigermane, Me 3 GeGeMe 3, reacted with various alkynes in the presence of platinum complexes at 120° C to afford Z–1, 2-bis (germyl) ethenes in moderate to good yields. Terminal alkynes exhibit higher reactivities than internal ones.[Pt (acac) 2] and [Pt (dba) 2] serve as efficient catalysts, while [Pt (PPh 3) 4],[PtCl 2 (PPh 3) 2], and [Pt (dba) 2]- phosphite were found to be inactive. Four-and six-membered cyclic oligogermanes, such ...
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