Improved synthesis of sterically encumbered multibrominated corroles

Efficient and easily reproducible synthesis of sterically hindered multibrominated corroles is achieved via dipyrromethane-aldehyde condensation reaction in good yields. Boron trifluoride dietherate (BF3·Et2O) is found to be the effective catalyst for cyclization reaction, giving corrole as the major product.

An improved, facile method for the synthesis of sterically encumbered multibrominated corroles is described based on the use of boron trifluoride dietherate (BF3·Et2O) as the catalyst.Figure optionsDownload as PowerPoint slide