Highly Unsaturated Macrocyclic Silahydrocarbons Containing Exocyclic Phenyl Groups
摘要:
A series of 12- and 18-membered macrocycloethynes and macrocyclosilethenesilethynes, containing peripheral methyl and phenyl groups was prepared by organomagnesium sysnthesis under conditions of high dilution. One of these compounds contains an endocyclic 1,4-phenylene bridge.
Rigid rod molecules containing two Si(OMe)3 or SiMe(OMe)2 groups for hybrid materials synthesis
摘要:
The synthesis of new bis(trimethoxysilyl) and bis(dimethoxymethylsilyl)arene compounds containing rigid organic groups such as stilbenyl, diphenylacetylene or diphenylbut-1,3-diyne is reported. The Heck type reaction constituted a convenient route to these compounds. since this coupling reaction appeared compatible with the presence of Si(OR)(3) groups. (C) 2001 Elsevier Science B.V. All nights reserved.
The X-ray crystal structure of the 1,4-bis(dihydroxymethylsilyl)benzene exhibits an unusual crystal packing with a hydrogen bonded network locking the orientation of the molecules to an approximate head-to-tail arrangement. (C) 2001 Elsevier Science B.V. All rights reserved.