CARBONYLCHLOROBIS(TRIPHENYLPHOSPHINE)IRIDIUM(I)

Reaction

1. Catalyst for the intramolecular carbonylative [2+2+1] cycloaddition of allenynes.
2. Catalyst for the selective hydrogenation of myrcene.
3. Catalyst for silylation of ortho-functionalized aryl halides with hydrosilanes.
4. Catalyst for synthesis of aldenamines from carboxamides by silane-reduction/dehydration under mild conditions.
5. Hydrogen atom transfer catalyst for radical cyclizations.
6. Complex for photocatalytic alkane dehydrogenation.
7. Catalyst for chemoselective reductive nucleophilic addition to N-methoxyamides.
8. Catalyst for chemoselective reductive alkynylation of tertiary amides.

Chemical Properties

GREEN FINE CRYSTALLINE POWDER

Uses

Carbonylchlorobis(triphenylphosphine)iridium(I) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuffs.

Application

Carbonylchlorobis(triphenylphosphine)iridium(I) can be used as a catalyst precursor for homogeneous hydrogenation, decarbonylation of acyl halides, hydrosilylation of olefins, and hydroboration.

Preparation

In a round-bottomed flask a mixture containing 3.52 g (10 mmol) of IrCl3.3H2O, 13.1 g (50 mmol) of  PPh3, 4 mL of aniline, and 150 mL of DMF is heated under nitrogen at reflux for 12 h. After filtering the resulting redbrown solution hot, 300 mL of warm methanol is added rapidly and the mixture stirred. Upon cooling in an ice bath, yellow  crystals of Carbonylchlorobis(triphenylphosphine)iridium(I) are collected on a filter and washed with 250 mL of methanol and then with 25 mL of  diethyl ether (87-90%).