Synthesis and Reactivity of the Ruthenium Cyclopropenyl Complex with a Tp Ligand
نویسندگان
چکیده
substitution product, Tp(PPh3)(CH3CN)RuCdC(Ph)CHCN (4). The cyclopropenyl ring in 3 and 4 is susceptible to ring opening by electrophiles such as CF3COOH, Ph3CPF6, and HgCl2. The substitution reaction of 3 with pyrazole is followed by an intramolecular nucleophilic addition of the nitrogen atom at the R-carbon atom to afford the metallacyclic complex, Tp(PPh3)Ru(C3H3NN)CdC(Ph)CH2CN (8a). The reaction of 3 with CO in the presence of MeOH gives Tp(PPh3)(CO)RuC(OMe)dC(Ph)CH2CN (9). The reaction of CF3COOH with 9 yields Tp(PPh3)(CO)RuC(O)CH(Ph)CH2CN (11). The structures of 8a and 11 have been determined by X-ray diffraction analysis.
منابع مشابه
Cyclopropenation of organometallic vinylidene complexes
The chemistry of metal cyclopropenyl complexes derived from deprotonation of cationic ruthenium vinylidene complexes is reviewed. Such a metal coordinated cyclopropenyl ligand can be used for the preparation of heterocyclic compounds. The chemical reactivity of cyclopropenyl complexes is influenced by the nature of substituents on the three-membered ring and by the nature of ancillary ligand ar...
متن کاملSynthesis of novel tridentate ligand-based palladium catalyst and investigation of its reactivity towards Suzuki, Sonogashira and Heck coupling reactions
We have demonstrated a simple and efficient route for the synthesis of a novel imine based tridentate ligand and its Pd-complex to investigate the C-C cross-coupling reactions, that involve column chromatography purification in only one step. The catalytic activity of the newly synthesized catalyst was studied for the Suzuki, Sonogashira and, Heck cross-coupling reactions under mild conditions....
متن کاملProton-induced reactivities of ruthenium azido complexes: the first example of boron-carbon bond formation by methylene insertion into a B-H bond.
Whereas the reaction of Tp(PhCN)(PPh(3))Ru-N(3) {Tp = HB(pz)(3), pz = pyrazolyl} with CH(3)I in CH(2)Cl(2) led to the cationic ruthenium methyleneimine complex [Tp(PPh(3))(PhCN)Ru(NH=CH(2))]I, the analogous reaction with HCl gave rise to the ruthenium chloride complex containing a methyl tris(pyrazolyl)borate ligand (Me)Tp(PPh(3))(PhCN)RuCl, as a result of the highly unusual methylene insertion...
متن کاملReactivity of ruthenium vinylidene complexes containing indenyl/dppe ligands and unsaturated bonds at Cδ with trimethylsilyl azide.
This study presents a new reaction of cationic vinylidene complexes with Me₃SiN₃ (TMSN₃), which yields N-coordinated nitrile complexes 3. Treatment of a ruthenium acetylide precursor containing indenyl and dppe ligands with a series of organic halides produced the corresponding vinylidene complexes 2 in good yield. Further reaction of 2 with TMSN₃ at room temperature produced N-coordinated ruth...
متن کاملEvaluation of [18F]FPTT Molecular structure and its binding to progesterone receptor (PR) for PET scan of breast cancer FPTT Molecular structure and its binding to progesterone receptor (PR) for PET scan of breast cancer
Breast cancer is a complicated disease that it is accompanied by different symptoms. Diagnosis of this disease is performed by various techniques. Using Radiopharmaceuticals is a new method to diagnose the said tumors. [18F]-FPTT is one of these nuclear medicines for detection of breast cancer. It seems that the binding of the title radiopharmaceutical to the progesterone receptor is...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999