31731-63-2

Upstream product

• 2401-73-2 1,1,3,3-tetramethyl-1,3-dichlorodisiloxane 
• 501-65-5 diphenyl acetylene 
• 760-32-7 diethylmethylsilane 
• 91708-98-4 2-Ethyl-1,1,2,3,3-pentamethyl-4,5-diphenyl-2,3-dihydro-1H-[1,2,3]trisilole 
• 69093-06-7 1,1,2,2-tetramethyl-3,4-diphenyl-1,2-disilacyclobut-3-ene 
• 60703-07-3 cis-1,2-bis(fluorodimethylsilyl)-1,2-diphenylethene 
• 69093-08-9 1,1,2,2,3,3-hexamethyl-4,5-diphenyl-2,3-dihydro-1H-1,2,3-trisilole 
• 91708-97-3 1,1,3,3-Tetramethyl-2,2,4,5-tetraphenyl-2,3-dihydro-1H-[1,2,3]trisilole 
• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 

Downstream Products

• 79628-15-2 dimethyl(phenyl)(phenylethynyl)silane 
• 69093-06-7 1,1,2,2-tetramethyl-3,4-diphenyl-1,2-disilacyclobut-3-ene 
• 501-65-5 diphenyl acetylene 

Relevant academic research and scientific papers

Gold-catalyzed dehydrogenative cycloaddition of tethered 1,n-dihydrodisilanes to alkynes

Gold nanoparticles supported on TiO2 (0.1-2% mol) catalyze at mild conditions the dehydrogenative addition of tethered 1,n-dihydrodisilanes, such as 1,1,3,3-tetramethyldisiloxane (1), 1,1,3,3-tetraphenyldisiloxane (2), 1,1,1,3,5,7,7,7-octamethyltetrasiloxane (3), 1,1,3,3,5,5-hexamethyltrisiloxane (4), and 1,2-bis(dimethylsilyl)benzene (5), to alkynes, forming cycloadducts and releasing H2. Under the same conditions, polymeric methylhydrosiloxane is completely unreactive. For the majority of terminal alkynes and 1,n-dihydrodisilanes the yields are excellent (up to 99%). In general, terminal alkynes are more reactive as compared to internal. The reaction tolerates several functional groups and can be performed in a variety of solvents. In the case of 1,1,3,3-tetramethyldisiloxane, it is proposed that gold nanoparticles form intermediate cyclo-gold-tetramethyldisiloxane via a dehydrogenative pathway, which undergoes a formal [3+2] cycloaddition to alkynes.

Oxidative cycloaddition of 1,1,3,3-Tetramethyldisiloxane to alkynes catalyzed by supported gold nanoparticles

Gold nanoparticles supported on TiO2 (0.1-1% mol) catalyze at room temperature and at extremely mild conditions the unprecedented oxidative cycloaddition of 1,1,3,3-tetramethyldisiloxane to alkynes, forming substituted 2,5-dihydro-1,2,5-oxadisiloles, with concomitant evolution of hydrogen gas. For the majority of the substrates, the yields are exceptional (up to 99%). The reaction proceeds at room temperature, tolerates a variety of functional groups, and can be performed in several solvents.

Synthesis, structure, and reactivity of 1,ω-bis(pseudo-pentacoordinated) 1,ω-difluoro-oligosilanes bearing 8-(dimethylamino)-1-naphthyl groups

1,ω-Bis[8-(dimethylamino)-1-naphthyl]-1,ω-difluorotrisilane 1 (ω=3) and tetrasilane 2 (ω=4) have been prepared. The X-ray crystallography of dl-1 and meso-1 shows unsymmetrical structures having different coordination modes at the two terminal silicons. T

PHOTOLYSIS AND THERMOLYSIS OF 1,2,3-TRISILACYCLOPENTENE. REGIOSPECIFIC AND NON-REGIOSPECIFIC SILYLENE EXTRUSION.

1,2,3-Trisilacyclopent-4-ene generates silylene to give 1,2-disilacyclobut-3-ene on both photolysis and thermolysis.The silylene arises from either the central or the terminal silicon atom of the ring depending on the nature of substituents on the central