N,N-Bis-(dimethylfluorosilylmethyl)amides of N-organosulfonylproline and sarcosine: synthesis, structure, stereodynamic behaviour and in silico studies

Abstract

(O→Si)-Chelate difluorides R3R2NCH(R1)C(O)N(CH2SiMe2F)2, were synthesized by silylmethylation of amides R3R2NCH(R1)C(O)NH2, subsequent hydrolysis of unstable dichlorides into 2,6-disilamorpholines and the reaction of the latter compounds with BF3·Et2O.

Halogen exchange in complexes of hexacoordinate tin (LnCH2)2SnX2 and (LnCH2)2SnY2 containing lactamomethyl n-membered C,O-chelate ligands LnCH2 (n=5–7; X, Y = Cl, Br, I)

“…An important aspect of our ongoing studies on organic complexes of penta-and hexacoordinate (hypervalent) silicon, germanium and tin with C,O-chelating amidomethyl and lactamomethyl ligands (L n CH 2 , n = lactam ring size, [5][6][7][8] is the effect of the substituent nature on the structure and rigidity of the coordination environment around the central atom. The results of these studies are discussed in reviews [1][2][3][4] and research papers [5][6][7][8][9][10][11][12].…”