PYRROLE CHEMISTRY: I. SUBSTITUTION REACTIONS OF 1-METHYLPYRROLE
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چکیده
منابع مشابه
Synthesis of Pyrrole Phosphonate Esters: Emphasis on Pyrrole NH Acids and Dialkylacetylenic Esters Substitution
Reaction of dialkyl acetylenedicarboxylates 1a-c andpyrrole derivatives 2a-e in the presence of triphenylphosphite (TPP) was investigated and the effect of the pyrrole substitution was established. Diastereoselectivity is observed with pyrroles, 2a,b, yieldingphosphonate ester derivatives 3a-f and 4,and their relative configuration is determined by 1H/13C and 31</...
متن کاملsynthesis of pyrrole phosphonate esters: emphasis on pyrrole nh acids and dialkylacetylenic esters substitution
reaction of dialkyl acetylenedicarboxylates 1a-c andpyrrole derivatives 2a-e in the presence of triphenylphosphite (tpp) was investigated and the effect of the pyrrole substitution was established. diastereoselectivity is observed with pyrroles, 2a,b, yieldingphosphonate ester derivatives 3a-f and 4,and their relative configuration is determined by 1h/13c and 31p nmr and confirmed by single x-r...
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The reaction of (E)-4,5-epoxy-(E)-2-heptenal with butylamine and glycine methyl ester produced brown macromolecular pigments, which showed fluorescent characteristics similar to lipofuscins. This polymerization reaction implies in the first step the formation of 1-alkyl-2-(1'-hydroxyalkyl)pyrroles (IV, VI). Compounds IV and VI have been isolated and characterized from the above reactions, and t...
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The novel chelating PNP pincer ligand 2,5-bis((diphenylphosphino)methyl)-1H-pyrrole (1) was prepared and its nickel coordination chemistry explored. The reaction with Ni(COD)(2) led to a diamagnetic dinuclear nickel(I) complex (4) which was also obtained by the reaction of the square planar Ni(II) complexes [(PNP-Ph(2))NiX] (X = Cl (2), X = I (3)) with Li(Et(3)BH).
متن کاملThe Kinetics and Mechanisms of Substitution Reactions of Trans-[Co(en)2CNCl]+ in Binary Mixed Solvent
The kinetics and mechanisms of the substitution reactions of trans-[Co(en)2CNCl]+ with unidentate anions, , CN¯, I¯, , Br¯ and SCN¯ in 60% v/v DMF-H2O binary solvent at 40.0±0.2 °C were studied spectrophotometrically. An Id mechanism was assigned for the replacement of chlorine by , CN¯ and I¯, an Ia one for...
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ژورنال
عنوان ژورنال: Canadian Journal of Chemistry
سال: 1957
ISSN: 0008-4042,1480-3291
DOI: 10.1139/v57-005