Chloromethylsilane functionalised dendrimers: synthesis and reactivity

Recent chemistry of the η5-cyclopentadienyl dicarbonyl iron anion

“…Moss and coworkers reacted [91] the Fp anion with a chloromethyl terminated silane dendrimer (Scheme 25). The dendrimer was isolated in high yield, characterized, and various other reactions were attempted.…”

Functionalization of linear and cyclic siloxanes and a dendritic carbosilane with (η5-C5H5)Fe(CO)2Si(CH3)2CHCH2 via hydrosilylation reaction

“…This compound is accessible by reaction of the carbonyl anion Na[(g 5 -C 5 -H 5 )Fe(CO) 2 ] with the dendritic carbosilane Si[(CH 2 ) 3 -Si(CH 3 ) 2 Cl] 4 via salt elimination reaction [12]. Several examples of metallocarbonyl-substituted dendrimers have been reported by Moss and coworkers [13].…”

“…Compound 1 has been characterized by mass spectrometry (FAB-MS), and FTIR and 1 H, 13 C and 29 Si NMR spectroscopies. The IR spectrum of 1, exhibits two typical m(CO) bands at 1944 and 1996 cm À1 as expected for compounds of the type (g 5 -C 5 H 5 )Fe(CO) 2 L. The 1 H NMR spectrum of 1 (see Fig.…”

“…The new multimetallic compounds 2-4 were characterized by FTIR, and 1 H, 13 C and 29 Si NMR spectroscopies and mass spectrometry. For example, the 1 H NMR spectrum of 2 (see Fig.…”

“…1 H NMR (CDCl 3 , 300 MHz): d = 4.68 (s, 5H, C 5 H 5 ), 5.58 (dd, 1H, CH@CH 2 (cis)), 5.80 (dd, 1H, CH@CH 2 , (trans)), 6.49 (dd, 1H, CH@CH 2 ), 0.42 (s, 6H, SiCH 3 ). 13 …”