text: 4-Pyrrolidinylpyridine is an organic compound with the formula (CH)NCHN.  The molecule consists of a pyrrodinyl group ((CH)N-) attached via N to the 4-position of pyridine.  It is a white solid.  The compound has attracted interest because it (pK = 9.58) is more basic than dimethylaminopyridine (pK = 9.41). It is a popular base catalyst.