Schumacher C, Molitor C, Smid S, Truong KN, Rissanen K, Bolm C. Mechanochemical Syntheses of
N-Containing Heterocycles with TosMIC.
J Org Chem 2021;
86:14213-14222. [PMID:
34405999 DOI:
10.1021/acs.joc.1c01529]
[Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A mechanochemical van Leusen pyrrole synthesis with a base leads to 3,4-disubstitued pyrroles in moderate to excellent yields. The developed protocol is compatible with a range of electron-withdrawing groups and can also be applied to the synthesis of oxazoles. Attempts to mechanochemically convert the resulting pyrroles into porphyrins proved to be difficult.
Collapse