No heteroatom required! In many solid-phase syntheses, after the release from the polymer support a heteroatom (e.g. O, S, N) remains in the substrate as a residue of a linking protecting group. With polymer-bound tin reagents cleavage and cyclization of the substrate with C-C bond formation (see picture) can now be achieved by intramolecular Stille coupling. S=substrate.
无需杂原子!在许多固相合成中,从聚合物载体上释放后,杂原子(例如O,S,N)作为连接保护基团的残基保留在底物中。现在,通过与聚合物结合的
锡试剂,可以通过分子内Stille偶联实现具有CC键形成的底物的裂解和环化(参见图片)。S =底物。