THE UNUSUAL REACTION OF DIMETHYLAMINO)METHYL-1-NAPHTHYL]PHENYLCHLOROSILANE WITH FLUOREN-9-YLLITHIUM - SYNTHESIS OF KINETICALLY STABLE DIBENZOSILAFULVENE

The first stable dibenzosilafulvene, 14-[8'-(dimethylamino)methyl-1'-n aphthyl 14 phenyl-14-silanuorenylide 1, was obtained in one step from fluoren-9-yllithium and dimethylamino)methyl-l-naphthyl]phenylchlorosi lane 2 as a stable solvate with THF; the zwitterionic structure of 1 i s established by H-1, C-13 and Si-29 NMR in solution and solid state a nd its reactions with crotonaldehyde, ethanol and triethylethylidene-l ambda(5)-phosphane are described.