Mp. Waugh et al., REVERSIBLE CYCLIZATION REACTIONS TO FORM RUTHENAFURANS - X-RAY CRYSTAL-STRUCTURE OF [RU(CO)(C(PH)OC(OET)=CH)CL(PME(2)PH)(2)], Journal of the Chemical Society, Chemical Communications, (9), 1995, pp. 941-942
Ruthenafurans [Ru(CO){C(R)OC(OEt)=CH}CIL(2)] (L = PMe(2)Ph, R = CH=CHO
Et CH=CHCMe(3), Me or Ph; L = PMe(3), R = CH=CHOEt or CH=CHPh) can be
formed reversibly from [Ru(CO)(2)RCIL(2)] and EtOC=CH: the rate-determ
ining forward step involves the formation of the intermediate [Ru(CO)(
COR)CIL(2)], which can be trapped when the reverse reaction occurs in
the presence of Me(3)CNC.