F. Denat, Hafida Gaspard-Iloughmane, J. Dubac
Jan 21, 1992
Citations
0
Influential Citations
14
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract New group 14 5-metallated pyrrole-2-carbaldehydes 5-R3E(C4H2NR′)CHO (E Si, Ge, Sn; R Me, Et, nBu; R′ H, Me) have been regiospecifically prepared from corresponding pyrrole-2-carbaldehydes by either (i) 5-lithiation after protection of the aldehyde function by treatment with lithium N-methylpiperazide or by formation of an azafulvene dimer or (ii) metallation by R3EX (X Cl, Br). The 5-silylated compound (E Si, R R′ Me) has been also obtained from 1-methyl-2,5-bis(trimethylsilyl)pyrrole.