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Download Chemistry of Heterocyclic Compounds: The Pyridazines, PDF

This new quantity considerably updates the unique pyridazines quantity which was once released in 1973. asserting the most recent quantity within the winning and renowned Chemistry of Heterocyclic Compounds Series.Content:
Chapter 1 basic Syntheses from Aliphatic or Carbocyclic Synthons (pages 1–58):
Chapter 2 fundamental Syntheses from different Heterocyclic structures (pages 59–130):
Chapter three Pyridazine, Alkylpyridazines, and Arylpyridazines (pages 131–176):
Chapter four Halogenopyridazines (H 219) (pages 177–250):
Chapter five Oxypyridazines (H 23) (pages 251–322):
Chapter 6 Thiopyridazines (H 755) (pages 323–342):
Chapter 7 Nitro?, Amino?, and comparable Pyridazines (H 463, 629) (pages 343–386):
Chapter eight Pyridazinecarboxylic Acids and comparable Derivatives (H353, 407) (pages 387–433):

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Additional resources for Chemistry of Heterocyclic Compounds: The Pyridazines, Supplement 1, Volume 57

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1 1. 427 Dinitrogen tetroxide will also act as an N 1-N2 synthon with appropriate dimethylene compounds. Thus I ,6-diphenyl-1,3,4,6-hexanetetrone (197) in ether was treated with ice-cold liquid N 2 0 4 to afford, 3,6-dibenzoyl-4,5dihydro-4,5-pyridazinedione 1,2-dioxide (198). 2 Where the Tivo-Atom Synthon Provides N2 + C3 No examples of such syntheses appear to have been reported in the period under review. 3 Where the Two-Atom Synthon Provides C3 + C4 This large category of pyridazine syntheses is divided initially according to the nature of the C3-C4 synthon the subsequently subdivided (when necessary) according to the nature of the C5-C6-N 1 -N2 cosynthon.

1. %; structure confirmed by X-ray analysis). 1520 With Appropriate Alken- or Alkynones cr-Benzoylformyl-/3-diethylaminostyrene (99) gave 3,5-diphenyl-4( 1H)-pyridazinone (anhydrous H2NNH2, Pr'OH, EtzO, ? 249 3-(3-Chloro-6-methylphenyl)-2-~-toluoylmethyl)crotonic acid (100) gave a separable mixture of 3-(3-chloro-6-methylphenyl)-3-methyl-6-p-tolyl2,3,4,5-tetrahydro-4-pyridazinecarboxylic acid (101) and 4-(3-chloro6,cr-dimethylbenzyl)-6-p-tolyl-3(2H)-pyridazinone(102), the latter by reaction of hydrazine with both carbonyl groups of the substrate (100) (BuOH, reflux, 16h: 13% and 26%.

Azo compounds (including dialkyl azodicarboxylates), or other such providers. 1. %; structure confirmed by X-ray analysis). 1520 With Appropriate Alken- or Alkynones cr-Benzoylformyl-/3-diethylaminostyrene (99) gave 3,5-diphenyl-4( 1H)-pyridazinone (anhydrous H2NNH2, Pr'OH, EtzO, ? 249 3-(3-Chloro-6-methylphenyl)-2-~-toluoylmethyl)crotonic acid (100) gave a separable mixture of 3-(3-chloro-6-methylphenyl)-3-methyl-6-p-tolyl2,3,4,5-tetrahydro-4-pyridazinecarboxylic acid (101) and 4-(3-chloro6,cr-dimethylbenzyl)-6-p-tolyl-3(2H)-pyridazinone(102), the latter by reaction of hydrazine with both carbonyl groups of the substrate (100) (BuOH, reflux, 16h: 13% and 26%.

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