Pavel L. Shutov

New approach to 1-(phenylethynyl)germatranes and 1-(phenylethynyl)-3,7,10-trimethylgermatrane. Reactions of 1-(phenylethynyl)germatrane with N-bromosuccinimide and bromine

Abstract Reaction of N(CH 2 CHRO) 3 GeBr ( 2a, b ) with LiCCPh affords N(CH 2 CHRO) 3 GeCCPh ( 1a , b ) ( a , R=H; b , R=Me). Compound ( 1b ) was also obtained by treatment of Cl 3 GeCCPh ( 3 ) with N(CH 2 CHMeOSnEt 3 ) 3 ( 4 ). ( 1a ) reacts with N -bromosuccinimide to yield N(CH 2 CH 2 O) 3 GeC(Br) 2 C(O)Ph ( 5 ). Cis -N(CH 2 CH 2 O) 3 GeC(Br)C(Br)Ph ( 6 ) is formed by the reaction of 1a with Br 2 in equivalent amounts. All compounds were characterized by 1 H- and 13 C-NMR spectroscopy and mass spectrometry. Single crystal structures of 1a and 6 were determined by X-ray diffraction studies.

Synthesis and Characterization of Group 14 1-Haloazametallatranes

The reaction between MHal4 (M = Ge, Sn; Hal = Cl, Br) and N(CH2CH2NRLi)3 (R = Me, SiMe3) yields 1-haloazametallatranes 1−8, N(CH2CH2NR)3M−Hal (1, M = Ge, Hal = Cl, R = Me; 2, M = Ge, Hal = Br, R = Me; 3, M = Ge, Hal = Cl, R = SiMe3; 4, M = Ge, Hal = Br, R = SiMe3; 5, M = Sn, Hal = Cl, R = Me; 6, M = Sn, Hal = Br, R = Me; 7, M = Sn, Hal = Cl, R = SiMe3; 8, M = Sn, Hal = Br, R = SiMe3). The composition and structures of the new compounds were established by elemental analyses, 1H and 13C NMR spectroscopy and mass spectrometry. Single crystal structures of 1 and 3 were determined by X-ray diffraction studies: both compounds show transannular Ge−Nax interactions. (© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)