"The renaissance of organocatalysis since 2000 is truly impressive (Berkessel and Gröger 2004; Seayad and List 2005) (see also the other chapters in this monograph). Much of the design of organocatalysts for a variety of different reaction types is inspired by the knowledge that has accumulated regarding the mechanisms of enzyme catalysis. It has been estimated that about 40% of all enzymes are metalloenzymes, while the majority (60%) unfold their catalytic power in the absence of transition metals. Thus, the latter can be considered to be organocatalytic enzymes."
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Organocatalysis
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