M. Driess et H. Pritzkow, A NOVEL TYPE OF OLIGOFUNCTIONAL MACROHETEROCYCLE BY REACTION OF SILYLIDENE-PHOSPHANES AND SILYLIDANE-ARSANES WITH 1,6-DIISOCYANOHEXANE, Journal of the Chemical Society, Chemical Communications, (20), 1993, pp. 1585-1587
The reaction of the 1,1-diisityl-3,3,3-triisopropyldisilaphosphene 1 (
isityl = 2,4,6-triisopropylphenyl) and the analogous disilaarsene 2 wi
th 1,6-diisocyanohexane results in the formation of the unusual tricyc
lic macroheterocycles 5 and 6; the molecular structures of 5 and 6 hav
e been established by X-ray crystallographic analysis.