192325-36-3Relevant articles and documents
Reaction of lactams derived from 1,1,3,3-tetramethyl-1,3-disiloxanes with electrophilic reagents. Molecular and crystal structure of 1,1,3,3-tetramethyl-1,3-bis[N-(1-phenylethyl)]-acetamidomethyl-1,3-disiloxane and the adduct of 1,1,3,3-tetramethyl-1,3-bis(2-oxopyrollidinomethyl)-1,3-disiloxane with trichloroacetic acid
Shipov,Kramarova,Artamkina,Negrebetskii,Kalashnikova,Ovchinnikov,Pogozhikh,Baukov
, p. 889 - 896 (2007/10/03)
The effect was revealed of activation of the siloxane bond in lactams derived from 1,1,3,3-tetramethyl-1,3-disiloxanes containing aC(O)NCH2SiOSi fragment in reactions with electrophilic reagents, leading, in the general case, to facile Si-O bond cleavage and formation of five-coordinate silicon chelate rings incorporating the lactam oxygen atom which forms the coordination bond O→Si. The structure of 1,1,3,3-tetramethyl-1,3-bis[N-(1-phenylethyl)]acetamidomethyl]-1,3-disiloxane and the adduct of 1,1,3,3-tetramethyl-1,3-bis(2-oxopyrrolidinomethyl)-1,3-disiloxane with trichloroacetic acid was studied by X-ray diffraction. For the first time in siloxanes with amidomethyl and related substituents at the silicon atom in the former compound there was found a weak coordination interaction O...Si (2.8 A).
