Processing Aids for the Pharmaceutical and Fine Chemical Industries - Isocyanate Oligomerization References

1) Angew. Chem, Int. Ed., 2006,45,107-110
In situ NMR spectroscopic observation of a catalytic intermediate in phosphine-catalyzed cyclo-oligomerization of isocyanates
Pusztai, Zoltan; Vlad, Gabor; Bodor, Andrea; Horvath, Istvan T.; Laas, Hans J.; Halpaap, Reinhard; Richter, Frank U