New N-bridgehead heterocyclic compounds. I. Carbamoyl-substituted indolizines and benzoindolizines
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چکیده
منابع مشابه
Cationic 5-phosphonio-substituted N-heterocyclic carbenes.
2-Phosphanyl-substituted imidazolium salts 2-PR2(4,5-Cl-Im)[OTf] (9a,b[OTf]) (4,5-Cl-Im = 4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolium) (a: R = Cy, b: R = Ph) are prepared from the reaction of R2PCl (R = Cy, Ph) with NHC 8 (4,5-dichloro-1,3-bis(2,6-di-isopropylphenyl)-imidazolin-2-ylidene) in the presence of Me3SiOTf. 5-Phospanyl-substituted imidazolium salts 5-PR2(2,4-Cl-Im)[OTf] (...
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The use of two metal systems cis-Pt(NHC)(2)Me(2) and cis-Ir(NHC)(CO)(2)Cl help to highlight the flexibility of a series of cycloalkyl-substituted N-heterocyclic carbene ligands (ICy, ICy(7), ICy(8), ICy(12)). Bond dissociation enthalpies of several N-heterocyclic carbenes (NHCs) in cis-Pt(NHC)(2)Me(2) are estimated. Electronic and steric parameters of the ICy(n) ligands are quantified and discu...
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The ESCA spectra of several substituted benzenes and heterocyclic compounds were obtained. Multi peak structures are observed in the various energy regions. The effects are generally interpreted as due to shake up phenomena involving intramolecular charge-transfer transitions between a "donor" and an "acceptor" group in the molecule. A quantitative model for such kind of phenomena is given. It ...
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J (H .H)=0 .9Hz . lH, 10a-H), 5.75 (ddd, J(H,H)=17.0Hz, J ( H , H ) = 10.0 Hz. J (H,H) = 8.0Hz, 1 H, 9-H), 7.02 (AABB, analyzed as AB, Avnn = 54.0 Hr, J (H.H) = 9.0 Hz, 4 H, Ph-H), 7.54 (m. 1 H, 2-H). "C NMR (50.3 MHz, C,D,CI,, 100 "C): b =19.80* (C-6). 27.71 * (C-5). 30.65 (C-71, 35.96 (C-4a). 40.26 (C-4), 41.24 (C-8), 50.45 (OCH,), 51.57 (OCH,), 55.45 (Ph-OCH,). 58.87 (C-l'), 59.73 (C-8 a), 9...
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A series of new 2-arylimino-3-aryl-5-[5?-(3,4-dichlorophenyl)-2?-furylidene]-4-thiazolidinones (3a-l) have been synthesised by the condensation of 5-(3,4-dichlorophenyl)-2-furaldehyde 1 with 2-arylimino-3-aryl-5H-4-thiazolidinones 2 in glacial acetic acid. The physical and spectral data of the synthesised compounds are determined. The synthesised compounds have been screened for their in vitro ...
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2001
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0003.204