Title : C-H bonds as ubiquitous functionality: a general approach to complex arylated pyrazoles via sequential regioselective C-arylation and N-alkylation enabled by SEM-group transposition.

Pub. Date : 2009 Mar 4

PMID : 19206533






2 Functional Relationships(s)
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1 To circumvent the low reactivity of the C-3 position, we developed a "SEM switch", which transposes the SEM-protecting group from one nitrogen to the other in one step, and in the process transforms the unreactive C-3 position to the reactive C-5 position. Nitrogen complement C3 Homo sapiens
2 To circumvent the low reactivity of the C-3 position, we developed a "SEM switch", which transposes the SEM-protecting group from one nitrogen to the other in one step, and in the process transforms the unreactive C-3 position to the reactive C-5 position. Nitrogen complement C3 Homo sapiens