| Abstract: | Condensation of o-xylylene bis(triphenylphosphorane) 4 with (Me3Si)2N]2Sn yields the 1,3-bis(triphen-ylphosphoranediyl)-2σ2-stannaindene 2 , which is orange as a solid and red in solution and which demonstrates stannylene reactivity. Alkyl bromides andiodides add to 2 to give the corresponding 2σ4-stannaindanes. In the reaction with PCl3, the tin atom in 2 is replaced by a phosphenium ring member. A secondary product in the preparation of 2 is the spirocyclic 2σ4-stannaindane 12. Its structure has been determined by X-ray analysis. © 1998 John Wiley & Sons, Inc. Heteroatom Chem 9:103–108, 1998 |
