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- W2033986207 abstract "The reactions of diethylaminoethynyl(trimethyl)silane (1), bis(diethylaminoethynyl)methylsilane (2), diethylaminoethynyl(trimethyl)germane (3), dimethylaminoethynyl(triethyl)germane (4), diethylaminoethynyl(trimethyl)stannane (5) and methyl(phenyl)aminoethynyl(trimethyl)stannane (6) with trialkylboranes [BEt3 (7b), BPr3 (7c), BiPr3 (7d) and 9-alkyl-9-borabicyclo[3.3.1]nonanes 9-Me-9-BBN (8a) and 9-Et-9-BBN (8b)] were studied. The alkynes 1 and 2 did not react even with boiling BEt3, whereas the reactions of 3–6 afforded mainly novel enamines [(E)-1-amino-1-trialkylgermyl-2-dialkylboryl-alkenes (9, 10), (E)-1-diethylamino-1-trimethylstannyl-2-dialkylboryl-alkenes (11, 12), (E)-1-methyl(phenyl)amino-1-trimethylstannyl-2-dialkylboryl-alkenes (13, 14)]. This particular stereochemistry is unusual for products from 1,1-organoboration reactions, indicating a special influence of the amino group. The starting materials and products were characterized by multinuclear magnetic resonance spectroscopy (1H, 11B, 13C, 15N, 29Si, 119Sn NMR). Copyright © 2003 John Wiley & Sons, Ltd." @default.
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- W2033986207 date "2003-01-01" @default.
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- W2033986207 title "Aminoethynyl-silanes, -germanes and -stannanes: novel organometallic-substituted enamines via 1,1-organoboration" @default.
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