Preparation of Pyridine: 1,5-dicarbonyl compounds and ammonia followed by aromatization. скачать в хорошем качестве

Preparation of Pyridine: 1,5-dicarbonyl compounds and ammonia followed by aromatization.

#PreparationofPyridine, #Pyridine, #aromaticity, #ammoniatopyridine, #dicarbonyl, In this lecture, I have described the preparation of pyridine, an aromatic six-member heterocyclic molecule from 1,5-dicarbonyl compounds via a condensation reaction in presence of ammonia as the source of nitrogen. In the subsequent step, the aromaticity was regained by the oxidation process. Additionally, I have discussed two different strategies ( like hydroxylamine and pyrinium substitution) where the last step oxidation could be avoided. I have also provided links to some related videos. The audiences are requested to watch them. Thank you ….. For "Hantzsch Pyridine Synthesis: Preparation of pyridine from 1,3-dicarbonyl compounds and aldehyde" please click on the link "   • Hantzsch Pyridine Synthesis: Preparation o...  " For "Pyrrole preparation from Muccic acid and Furan: Complete mechanistic description." please click on the link "   • Pyrrole preparation from Muccic acid and F...  " For "Preparation of pyridine: 1,5-dicarbonyl compounds and ammonia followed by aromatization." please click on the link "   • Preparation of Pyridine: 1,5-dicarbonyl co...  " For "Paal-Knorr Synthesis of Pyrrole: Complete mechanistic description." please click on the link "   • Paal-Knorr Synthesis of Pyrrole: Complete ...  " For "Knoor Method for pyrrole preparation: Three different methods with mechanism and retro-synthesis." please click on the link "   • Knoor Method for pyrrole preparation: Thre...  " For "Hantzsch Pyrrole Synthesis: Three ways for Pyrrole preparation with examples and Retro-synthesis." please click on the link "   • Hantzsch Pyrrole Synthesis: Three ways for...  " For "Preparation and Restrosynthetic of 1,4 dicarbonyl compounds: for five-member heterocycle preparation" please click on the link "   • Preparation and Restrosynthetic of 1,4-dic...  " For "Feist–Benary synthesis of Furan: From 1,3-dicarbonyl compounds and alpha-halo ketone in basic medium" please click on the link "   • Feist–Benary synthesis of Furan: From 1,3-...  " For "Paal-Knorr synthesis of Furan: From 1-4-dicarbonyl compounds." please click on the link "   • Paal-Knorr synthesis of Furan: From 1,4-di...  " For "Hinsberg Synthesis of Thiophene: Application of Stobbe Condensation Reaction (Lecture 3)." please click on the link "   • Hinsberg Synthesis of Thiophene: Applicati...  " For "Pyrrole preparation from Muccic acid and Furan: Complete mechanistic description." please click on the link "   • Pyrrole preparation from Muccic acid and F...  " For "Paal-Knorr Synthesis of Pyrrole: Complete mechanistic description." please click on the link "   • Paal-Knorr Synthesis of Pyrrole: Complete ...  " For "Aromatic electrophilic substitution on Five member heterocycles: Complete mechanistic description." please click on the link "   • Aromatic electrophilic substitution on Fiv...  " For "Decarboxylation of five Heterocycles: Complete mechanistic description and role of Resonance energy." please click on the link "   • Decarboxylation of five-membered Heterocyc...  " For "Double Micheal addition (Part 2): method for 1,7-dicarbonyl compounds preparation and mechanism." please click on the link "   • Double Michael addition (Part 2): A method...  " For "Oxime formation and pH of medium with reaction mechanism and use in Beckmann Rearrangement." please click on the link "   • Oxime formation and pH of medium with reac...  " For "Properties of DDQ: (Part 1) Oxidation of organic compounds" please click on the link "   • Properties of DDQ (Part 1): Oxidation of o...  " For "Properties of DDQ (Part 2): Aaromatization." please click on the link "   • Properties of DDQ (Part 2): Aaromatization.  " For "Burgi Duniz Trajectory: Basic concept and application in Aldol-type condensation." please click the link "   • Burgi Dunitz Trajectory: Basic concept and...  ." For "Cross-Aldol Condensation, Condensation between two different carbonyls" please click on the link "   • Cross-Aldol Condensation: Condensation bet...  ". For "Cyclopentadienyl anion: Aromaticity & other properties (acidity Aromatic Electrophilic Substitution)" please click on the link "   • Cyclopentadienyl anion: Aromaticity & othe...  " For "Huckel Rule or (4n+2) Rule for aromaticity." please click on the link "   • Huckel Rule or (4n+2) Rule for aromaticity...  " For "Cyclopropenium ion an Aromatic cation: Physical and chemical properties and preparation." please click on the link "   • Cyclopropenium ion an Aromatic cation: Phy...  "