ChemInform Abstract: DIE RK. VON AMINOSILANEN MIT TERT., GESAETTIGTEN UND AETHINYL‐CARBINOLEN

Gverdtsiteli, I. M.; Baramidze, L. V.; Dzheliya, M. I.

doi:10.1002/chin.197307314

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“…Alkynylation of Et 2 NMe 2 SiCl, which is easily available from Me 2 SiCl 2 and diethylamine (Et 2 NH) in 81 % yield, [9,10] with PhCϵCMgBr gave (diethylamino)dimethyl(phenylethynyl)silane (PhCϵCMe 2 SiNEt 2 , 2) [11,12] in 78 % yield. Reaction of 2 with methanol [13] yielded 91 % of methoxydimethyl(phenylethynyl)silane (PhCϵCMe 2 SiOMe, 3), [4,14] which reacted with acetyl chloride (CH 3 COCl) to give a 90 % yield of 1.…”

Section: Monosilanesmentioning

confidence: 99%

Selective Synthesis of Functional Alkynylmono‐ and ‐trisilanes

2010

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The selective synthesis of functional alkynylsilanes RC≡C–(SiMe2)m–X (m = 1, 3) was investigated. Monofunctionalization with or without protecting groups gave moderate to good yields of alkynyldimethylmonosilanes RC≡CMe2SiX [R = Ph, X = Cl (1), NEt2 (2), OMe (3), H (4), Br (5), I (6), Cp (8), C5H4Li (10), Ph (11); R = Pr, X = Ph (12)]. Compounds 4 and 8 were converted into the (alkyne)transition‐metal complexes 4·Cp2Mo2(CO)4 (13) and 8·Co2(CO)6 (14), respectively, which were characterized by X‐ray diffraction. Stepwise extension and functionalization of the silane chain starting from 1‐chloro‐2‐(diethylamino)tetramethyldisilane (Et2NMe2Si–SiMe2Cl) yielded the trisilanes Ph–(SiMe2)3–X [X = NEt2 (18), OMe (19), Cl (20), H (21), C≡CPh (22), C≡CPr (23)]. The synthesized compounds were characterized by NMR and IR spectroscopy, 4, 11, 13, and 14 also by UV/Vis spectroscopy.

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