Organic catalysis, ring-opening

Multiphase homogeneous catalysis (continued) hydroformylation, 42 483-487, 498 hydrogenations, 42 488-491 metal salts as catalysis, 42 482-487 neutral ligands, 42 481 82 organic reactions, 42 495 0X0 synthesis, 42 483-487 ring-opening metathesis polymerization and isomerization, 42 492-494 telomerizations, 42 491-492 diols as catalyst phase, 42 496 fluorinated compounds as catalyst phase, 42 497... 

Ring-opening polymerization is one of the most important applications of SCBs in organic chemistry. Polymerization of SCBs, which gives rise to carbosilane polymers, has been carried out thermally, by transition metal catalysis, or, most commonly, by anionic initiation. Thermal polymerization is rare, however, and is not covered in this chapter. For leading references into thermal polymerization of SCBs, refer to <1996CF1EC-II(1B)867> and <1995COMC-II(2)50>. 

Jiang, Y., Mallat, T., Krumeich, F., and Baiker, A. 2008. Copper-based metal-organic framework for the facile ring-opening of epoxides. Journal of Catalysis 257, 390-395. 

Unfortunately, NBD does not absorb in the visible and UV-A (400-320 nm) range of the solar spectrum. This problem may be overcome by the use of a wide variety of photosensitizers, which includes transition metal complexes and organic sensitizers like acridones and aromatic ketones . In this section, however, new trends in the exothermic back-isomerization Q NBD are of considerable interest because in this two cyclopropane ring moieties are involved. This ring-opening reaction may be achieved by transition metal complexes " or by Lewis acid catalysis the latter, however, leads to side reactions which include cationic oligomerization ". ... 

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