30262-84-1

Upstream product

• 1292785-44-4 Si(CH₃)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2 
• 1292785-45-5 Si(C₆H₅)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2 

Downstream Products

• 1228942-31-1 1,1-dimethyl-2,5-bis(trimethylsilyl)-3-bis(pentafluoropheyl)borylsilane 
• 1292785-44-4 Si(CH₃)2(C₂HSi(CH₃)3)(CSi(CH₃)3)CB(C₆F₅)2 
• 1228942-36-6 5-[bis(pentafluorophenyl)boryl]-2,3-bis(trimethylsilyl)-1,1-dimethylsilole 

Relevant academic research and scientific papers

Reactions of bis(alkynyl)silanes with HB(C6F5) 2: Formation of boryl-substituted silacyclobutene derivatives

Treatment of R2Si(CC-SiMe3)2 [1a (Me), 1b (Ph)] with HB(C6F5)2 at low temperature (253 K (a), 273 K (b)) gives the -B(C6F5)2 substituted silacyclobutene products (4a,b) under kinetic control. Upon warming to room temperature they disappear to form the thermodynamically favoured isomeric silole derivatives (2a,b). Similar treatment of Me2Si(CC-R 1)2 [5a (R1 = Ph), 5b (R1 = tert-butyl) with HB(C6F5)2 at room temperature gave the stable -B(C6F5)2 substituted silacyclobutene derivatives 6 and 7, respectively. Subsequent photolysis resulted in a Z- to E-isomerization of the substituted exocyclic CC double bonds in these products. The silacyclobutene derivative E-6 was characterized by an X-ray crystal structure analysis.