Phenyl silyl

Substituted (5R,6A,)-6-(dimethyl(phenyl)silyl)-2-phenyldihydropyrazolo[l,2- ][l,2,4]triazole-l,3(2//,5//)-dione 716, synthesized via the [3+2] annulation of a-substituted allylic silanes 715 with PTAD, were oxidized to the corresponding hydroxy substituted urazoles 717. This work shows that allylsilanes with a single substituent at the allylic carbon undergo exclusive stereoselective [3+2] annulation (Scheme 114) <2007TL6671>. 

In Pd(0) mediated addition of trialkyl[dimethyl(phenyl)silyl]stannane to acetylenes <89S218> the product obtained from l-hydroxybut-3-yne after normal workup contained the substituted 1,2,5-oxasilastannolene (354) in addition to the expected 2-tributylstannylalk-l-ene (Equation (32)). 

A route to 72, a known precursor for thienamycin, relies on stereoselectivity provided by the dimethyl(phenyl)silyl group <99JCS(P1)2663>. High pressure promotes the tandem... 

Si(CH3)2 — C(jHs 2- Dimethylamino-( dimethyl-phen-yl-silyl)-meth- yr -- 37 11. ., -l-[(dimethyl-phenyl-silyl)-methyl]-... 10 60 19 0 0 0. ..-(dimethyl-phenyl-silyl)-phenyl-... 0 7... 

What products would be expected from the reaction of the compound the formula of which is shown below with lithium [dimethyl(phenyl)silyl]-iodidocuprate(I) Determine their configuration. 

As discussed later, others have noted formation of three- and four-membered ring products from phenyl-, silyl or alkynyl-substituted alkenes, which generate more stabilised product organolithiums, or from compounds bearing allylic leaving groups.111... 

Silyl iodide and bromide reacted with methyl and phenyl trimethylsilyl tellurium only upon heating at 60° for at least five hours. Phenyl silyl tellurium and methyl silyl tellurium were obtained in 78% and 90% yield, respectively. 

For the first time the proposed cationic pentacoordinated structure in solution could be confirmed for the solid state by a X-ray structure determination (Fig. 3), which shows clearly the ionic structure of bis[2-(dimethylaminomethyl)phenyl]silyl triflate 12. The coordination geometry around silicon is that of a nearly ideal trigonal bipyramidal structure with both dimethylamino groups occupying the axial positions (Si-N 205.2 and 207.2 pm). 

Amin (Difluor-phenyl-silyl)-methyl-trimethylsilyl- XIII/5, 234... 

Propansanre 2-(Dimethyl-phenyl-silyl)- -nitril XIII/5, 69... 

Propen 1,l-Difluoro-3-(dimethyl-phenyl-silyl)-2-methyl- E10 (En + RjSi —SR2 —CFj)... 

Bicyclo[4.5]deca-2,6-dien 3,6-Dimethyl-1-oxo- E19a, 221 (3-En-CO-Cl + In) Cydobuten 2(or 3)-(Dimethyl-phenyl-silyl)- 1-oxo- E17e, 284 (Keten -f- CH2N2)... 

Cyclopropen 2,3-Dimethyl-l-(dimethyl-phenyl-silyl)- E17d, 2717 (— Br2 - en)... 

Poly(w-carboranyl-siloxane) elastomers containing a mixture of di-methyl-and methyl(phenyl)-silyl units were synthesised using the Ferric Chloride catalyzed condensation reaction between di-chloro-di-organosilane and 1,7-bis(di-methyl(methoxy)silyl)-/w-carborane. Silica Nano tubes synthesised using i 7situ growth of DL Tartaric acid nanocrystals and concurrent sol-gel hydrolysis and condensation of silane. 

Dibromo-l- dibromo-phenyl-silyl)-l-methyl- 2717 C H,4C1N Cyclopropane... 

Benzyl-l-[(dimelhyl-phenyl-silyl)-methyl]- 273, 2029 2-[a-(Dimethyl-phenyl-silyl)-benzyl)]-1 -methyl- 274... 

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