Phosphorus-carbon bond formation via reactions of triphenylphosphine with acetylene and pentamethylcyclopentadienyl coordinated to iridium(III) |
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| Authors: | Chong Shik Chin |
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| Affiliation: | Chemistry Department, Sogang University, Seoul 121-742, Republic of Korea |
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| Abstract: | ![]()
Phosphorus-carbon bond is formed via: (i) the apparent HCCH insertion into Ir-P bond to produce Ir-CHCH-PPh3 group and (ii) the activation of the ring-methyl group of the coordinated Cp* (C5Me5 −) to produce Ir(η5-C5Me4CH2-PPh3) group from reactions of iridium(III)-Cp* complexes, [Cp*IrL3]n+ (n=1, 2); Cp*=C5Me5 −; L3=Cl(PPh3)2 (3), (CH3CN)3 (5). The following new P-C bond containing iridium(III) complexes have been prepared: [Cp*Ir(-CHCH-PPh3)Cl(PPh3)]+ (4) from 3 with HCCH; [Ir(η5-C5Me4CH2-PPh3)(H)(PPh3)2]2+ (6) from 5 with PPh3; [Cp*Ir(-CHCH-PPh3)2(PPh3)]2+ (7) from 5 with HCCH and PPh3; [Ir(η5-C5Me4CH2-PPh3)(-CHCH-PPh3)Cl(PPh3)]2+ (8) from [Ir(η5-C5Me4CH2-PPh3)(Cl)(PPh3)2]2+ (6-Cl) with HCCH; [Ir(η5-C5Me3(1,3-CH2-PPh3)2(H)(PPh3)2)]3+ (10) from [Ir(η5-C5Me4CH2-PPh3)(NCCH3)2(PPh3)]3+ (9) with PPh3; [Ir(η5-C5Me4CH2-PPh3)(-CHCH-PPh3)2(PPh3)]3+ (11) from 9 with HCCH and PPh3. |
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| Keywords: | P-C bond formation Phosphorous ylides Alkyne insertion into Ir-P bond Activation of the ring-methyl group of Cp* (Cp*=C5Me5 &minus ) Iridium(III) |
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