TY - JOUR
T1 - Heavier analogs of carbene complexes
T2 - Syntheses of a new type of silylene and germylene complexes and their reactions with unsaturated organic compounds
AU - Hashimoto, Hisako
AU - Tobita, Hiromi
PY - 2012/12/1
Y1 - 2012/12/1
N2 - In comparison with carbene complexes having reactive M C double bonds, their heavier analogs, i.e. silylene and germylene complexes, having M E E Si, Ge double bonds are also expected to show high reactivity. However, most of such complexes previously prepared have actually shown poor reactivity toward usual organic substrates, probably because their M E double bonds are sterically overprotected for stabilization. Recently, we have succeeded in synthesizing silylene and germylene complexes having hydrogen atoms on both the metal center and E atom. The M E double bonds of these complexes are indeed the least sterically protected in any known ones and can react smoothly with various substrates such as nitriles, ketones, heterocumulenes, etc. under mild conditions. Here we report the syntheses, structures, and novel reactions of these new silylene and germylene complexes.
AB - In comparison with carbene complexes having reactive M C double bonds, their heavier analogs, i.e. silylene and germylene complexes, having M E E Si, Ge double bonds are also expected to show high reactivity. However, most of such complexes previously prepared have actually shown poor reactivity toward usual organic substrates, probably because their M E double bonds are sterically overprotected for stabilization. Recently, we have succeeded in synthesizing silylene and germylene complexes having hydrogen atoms on both the metal center and E atom. The M E double bonds of these complexes are indeed the least sterically protected in any known ones and can react smoothly with various substrates such as nitriles, ketones, heterocumulenes, etc. under mild conditions. Here we report the syntheses, structures, and novel reactions of these new silylene and germylene complexes.
KW - Carbon-carbon bond cleavage
KW - Carbonyl compound
KW - Cycloaddition
KW - Double bond
KW - Germylene complex
KW - Heterocumulene
KW - Hydrogermylation
KW - Hydrosilylation
KW - Nitrile
KW - Silylene complex
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U2 - 10.5059/yukigoseikyokaishi.70.131
DO - 10.5059/yukigoseikyokaishi.70.131
M3 - Review article
AN - SCOPUS:84880375793
VL - 70
SP - 131
EP - 141
JO - Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry
JF - Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry
SN - 0037-9980
IS - 2
ER -