Convenient Access to π-Conjugated 1,3-Azaphospholes from Alkynes via [3+2]-Cycloaddition and Reductive Aromatization
Jan Weigand reports on the synthesis of π-conjugated 1,3-azaphospholes from alkynes.
The chemistry of phosphorus-containing heterocycles is well established and in recent years a significant number of P-heterocycles have been successfully used in various applications related to organic semiconductors, such as OLEDs, OPVs and OFETs, or as ligands in transition-metal complexes. A recent article from the group of Professor Jan J. Weigand at the Technische Universität Dresden (Germany) describes a new method for the synthesis of annelated 1,3-azaphospholes in a two-step procedure from a conveniently accessible phosphorus building block. The described method provides access to a wide range of compounds, which allows study of their physical and chemical properties.
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