222417-72-3

Upstream product

• 624-38-4 para-diiodobenzene 
• 222417-70-1 4-[tris(4-iodophenyl)silyl](oxyethyl) 
• 170159-24-7 acetylsulfanyl-4-(ethynyl)benzene 
• 222417-71-2 tris(4-iodophenyl)-(4'-(trimethylsilylethynyl)phenyl)-silane 

Downstream Products

• 222417-75-6 thioacetic acid S-[4-(4-{bis-[4-(4-acetylsulfanyl-phenylethynyl)-phenyl]-[4-(4-trimethylsilanylethynyl-phenylethynyl)-phenyl]-silanyl}-phenylethynyl)-phenyl] ester 
• 222417-73-4 thioacetic acid S-(4-{4-[bis-[4-(4-acetylsulfanyl-phenylethynyl)-phenyl]-(4-ethynyl-phenyl)-silanyl]-phenylethynyl}-phenyl) ester 

Relevant academic research and scientific papers

Facile convergent route to molecular caltrops

The convergent syntheses of molecular caltrops are described starting from tetraethyl orthosilicate and using organolithium additions and Pd/Cu- catalyzed coupling methods. The caltrop core is based on a tetrahedral silicon atom, and there are three legs each bearing sulfur-tipped feet for adhesion to metallic surfaces. The forth prong (arm) is non-sulfur-bearing for projection upward from the surface. Rigid phenyleneethynylene segments are used for the legs and arms. These organosilicon caltrops may have utility as scanning probe microscopy tips.