ChemInform Abstract: DEHYDROCONDENSATION OF TRIALKYLSILANES WITH ACETYLENE AND MONOORGANYLACETYLENES

Abstract

Trialkyl‐silane, z.B. (I) oder (IV), reagieren mit Alkyl‐ (V) oder Aryl‐acetylenen (II) in Gegenwart eines Katalysatorengemisches aus Platin‐chlorwasserstof fsäure und Iod oder LiCl zu den Acetylenen (III) bzw. (VI).

Electrochemical recycling of homogeneous catalysts

“…Many industrial catalytic systems use ionic catalyst promoters and cocatalysts. For the case of hydrosilylation, aluminum chloride ( 54 ) and lithium chloride ( 55 ) are two such catalyst-stabilizing promoters. PVF adsorption remained selective to Speier’s catalyst while in the presence of 20-fold excess of competing LiCl and AlCl 3 ionic hydrosilylation promoters, without hindering catalyst uptake (LiCl, 234 mg/g; AlCl 3 , 213 mg/g) or recovery efficiency (LiCl, 99.9%; AlCl 3 , 99.6%).…”

Highly Heat and Oxidation-Resistant Materials Prepared Using Silicon-Containing Thermosetting Polymers with [Si(H)~C≡C] Units

“…Other preparation routes, adaptable to MSP synthesis, such as Grignard addition reactions using chlorosilanes [4,15,16] and dehydrogenative cross-coupling reaction between phenylsilane and m-diethynylbenzene in the presence of some transition metal complexes [5,6,[17][18][19][20][21][22], were also examined. Other routes were not industrially viable and could not yield pure and stable polymers.…”

Platinum-Catalyzed One-Pot Alkenylation of Aldehydes Using Alkynes and Triethylsilane: Dual Catalysis by Platinum(II) Chloride

“…With these encouraging results, we next investigated the one-pot alkenylation of 3a using the reaction mixture obtained from 1a and Et 3 SiH under catalysis by 5 mol % PtCl 2 . After the hydrosilylation of 1a (1 mmol) with Et 3 SiH (1 mmol) in DCE was completed, LiI (0.1 mmol) and 3a (0.5 mmol) were added to the reaction vessel. , The mixture was heated to 70 °C and stirred for 24 h. This one-pot operation afforded the desired product 4aa but with low reproducibility (Table , entry 1). As described in our previous report, the present alkenylation is hardly catalyzed by Pt(0) and Pt(0) complexes .…”