Hydrolysis of Diphenyldichlorosilane

Abstract

Methylcyclopentane has been converted directly to benzene (and other aromatics) by simultaneous isomerization and dehydrogenation over molybdena-alumina catalyst in the presence of hydrogen. The extent of reaction is dependent on both thermodynamic conditions and length of process period. Emeryville, California Received11

Synthesis and characterization of alt‐copoly(carbosiloxane)s containing oligodiphenylsiloxane segments

“…The I /pyridine complex was precipitated from the reaction mixture by the addition of Et 2 O. Pyridine was removed by the addition of dilute HCl to produce 32.4 g (63% yield) of I , which was recrystallized from toluene/hexane [mp = 112.5–113 °C (lit. 113–114 °C)]33 before use.…”

Facile syntheses, structural characterizations, and isomerization of disiloxane-1,3-diols

“…A variety of disiloxane-1,3-diols of general formula (OHR 2 Si) 2 O (R ¼ Me [2], Et [3], Pr [4], Bu [4,5] or Ph [6]) have been synthesized and structurally investigated. The simplest disiloxane-1,3-diol, (OHMe 2 Si) 2 O, is one of the basic units from which polydimethylsiloxanes are built.…”

Synthesis of mono‐ and di‐functional silicon containing derivatives of long chain fatty acid esters

“…It is known that, with nonbulky dichlorosilanes, such as dimethyldichlorosilane, both linear and cyclic polysiloxanes are obtained on hydrolysis. With bulkier substituted dichlorosilanes, such as diphenyldichlorosilanes, hydrolysis under mild conditions proceeds only to the diphenylsilane diol stage (5), and cyclic siloxanes are only obtained on using more drastic conditions. With still more sterically hindered silane diols, such as di-t-butylsilane diol, even treatment with hot concentrated hydrochloric or sulfuric acids has failed to condense this compound (6).…”