Organocobalt cluster complexes
| Autor: | Dietmar Seyferth, Paul L.K. Hung, John E. Hallgreen, Gary H. Williams |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
chemistry.chemical_classification
Ion exchange Stereochemistry Aryl Organic Chemistry Sulfuric acid Alcohol Protonation Biochemistry Medicinal chemistry Reaction product Inorganic Chemistry chemistry.chemical_compound chemistry Carbonium ion Reagent Trifluoroacetic acid Materials Chemistry Organic chemistry Triethylsilane Physical and Theoretical Chemistry Benzene Dicobalt octacarbonyl Alkyl |
| Zdroj: | Journal of Organometallic Chemistry. 134:67-83 |
| ISSN: | 0022-328X |
| DOI: | 10.1016/s0022-328x(00)93614-3 |
| Popis: | The reaction of the appropriate RCCl 3 compound with dicobalt octacarbonyl has been used to prepare CH 2 CHCCo 3 (CO) 9 , CH 2 C(CH 3 )CCo 3 (CO) 9 , Me 3 SiCHCHCCo 3 (CO) 9 and CH 3 C(O)CHCHCCo 3 (CO) 9 . A similar reaction with CH 2 CHCH 2 CCl 3 gave a mixture of CH 2 CHCH 2 CCo 3 (CO) 9 , CH 3 CH CHCCo 3 (CO) 9 and CH 3 CH 2 CH 2 CCo 3 (CO) 9 . Protonation of these α,β-unsaturated methylidynetricobalt nonacarbonyl complexes resulted in formation of the αcluster carbonium ions (e.g., CH 2 =C(CH 3 )CCo 3 (CO) 9 + HPF 6 → (OC) 9 Co 3 CC(CH 3 ) 2 + PF6 6 − ), with desilylation occurring during the protonation of Me 3 SiCH CHCCo 3 (CO) 9 . The CH 3 C(O)Cl/AlCl 3 reagent was used to acetylate the first two listed complexes in the β position, and methoxymercuration of CH 2 CHCCo 3 (CO) 9 with Hg(O 2 CCF 3 ) 2 , followed by anion exchange with NaCl, gave ClHgCH 2 CH(OCH 3 )CCo 3 (CO) 9 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|