Organometallic complexes are usually assumed to be rather unstable, for instancewith respect to high temperatures. It is an interesting fact that organometalliccatalyzedreactions are successfully carried out in SCW. The advantage of organometallicreactions with respect to their technical application can be the facile separationof products upon cooling.14.3.2.1 Heck CouplingThe reaction of iodobenzene with alkenes [6466] was carried out in hot compressedwater at 260 "C and also in SCW at 400 "C. The pre-catalyst used in most
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