TY - JOUR
T1 - Synthesis and Structures of Sterically Encumbered Group 14 Monolithio Compounds and Unexpected Differences in Their Reactivity
AU - Pop, Lucian Cristian
AU - Kurokawa, Nobuaki
AU - Ebata, Hiroaki
AU - Tomizawa, Katsuya
AU - Tajima, Tomoyuki
AU - Saito, Masaichi
PY - 2017
Y1 - 2017
N2 - Group 14 monolithio compounds with sterically encumbered terphenyl ligands, ArM14(SiHMe2)2Li [M14 = Si, Ge, Sn; Ar = 2,6-bis(2,6-diisopropylphenyl)phenyl and 2,6-bis(2,4,6-triisopropylphenyl)phenyl], were prepared by transmetalation reactions of ArM14(SiHMe2)3 with methyllithium, the structures of which were established by X-ray diffraction analysis. The monolithiosilanes and monolithiogermanes reacted with iodomethane and trichlorophosphane to afford the corresponding monomethylated and dichlorophosphane-substituted derivatives, respectively. However, surprisingly, the reactions of monolithiostannanes with iodomethane and trichlorophosphane provided trimethylstannane and trichlorostannane, respectively.
AB - Group 14 monolithio compounds with sterically encumbered terphenyl ligands, ArM14(SiHMe2)2Li [M14 = Si, Ge, Sn; Ar = 2,6-bis(2,6-diisopropylphenyl)phenyl and 2,6-bis(2,4,6-triisopropylphenyl)phenyl], were prepared by transmetalation reactions of ArM14(SiHMe2)3 with methyllithium, the structures of which were established by X-ray diffraction analysis. The monolithiosilanes and monolithiogermanes reacted with iodomethane and trichlorophosphane to afford the corresponding monomethylated and dichlorophosphane-substituted derivatives, respectively. However, surprisingly, the reactions of monolithiostannanes with iodomethane and trichlorophosphane provided trimethylstannane and trichlorostannane, respectively.
KW - Group 14 elements
KW - Lithiation
KW - Metalation
KW - Silanes
KW - Stannanes
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U2 - 10.1002/ejic.201700945
DO - 10.1002/ejic.201700945
M3 - Article
AN - SCOPUS:85029453104
JO - Chemische Berichte
JF - Chemische Berichte
SN - 0009-2940
ER -