Syntheses of Carboranylpyrroles.

Abstract The syntheses of three carboranylpyrroles ( 5 , 10 and 14 ) bearing carborane cages in 3-position and/or 4-position of the pyrrole ring, either directly linked or through a methylene spacer, are described. Tetramerization of two carboranylpyrroles afforded the corresponding β-carboranylporphyrins, as mixtures of type I–IV isomers.