This new quantity considerably updates the unique pyridazines quantity which was once released in 1973. saying the most recent quantity within the winning and favorite Chemistry of Heterocyclic Compounds Series.Content:
Chapter 1 fundamental Syntheses from Aliphatic or Carbocyclic Synthons (pages 1–58):
Chapter 2 basic Syntheses from different Heterocyclic platforms (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):
Read Online or Download Chemistry of Heterocyclic Compounds: The Pyridazines, Supplement 1, Volume 57 PDF
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Extra resources for Chemistry of Heterocyclic Compounds: The Pyridazines, Supplement 1, Volume 57
2 h: 89%). Ixo3 Also other examples. '838 Buta-1,3-diene (190, R = H) or its 2,3-dimethyl derivative (190, R = Me) and p-chlorobenzenediazocy anide gave 2-p-chlorophen yl- 1,2,3,6-tetrahydro-I-pyridazinecarbonitriile (191, R = H) (neat, 25", 5 days: 85%) or its 4,5-dimethyl derivative (191, R =Me) (neat, IOO", 3 h: 90%), respectively;48"621 some kinetic work on such reactions has been reported. 1 1. 427 Dinitrogen tetroxide will also act as an N 1-N2 synthon with appropriate dimethylene compounds.
364 2-Phenylhydrazonomalononitrile(253) and malononitrile gave 4-amino-6imino-l-phenyl-l,6-dihydro-3,5-pyridazinedicarbonitrile (254) (pyridine, reflux, 10 h: 80%). Also other examples in the foregoing references and elsewhere. 4 Where the Two-Atom Synthon Provides C4 -I- C5 This potentially large category of syntheses is represented by very few examples. 3-diphenyi-2-azetidinone(258) (60%). 3 By using two 3-Atom Synthons Because of the symmetry of pyridazine, there can be only two possibilities within this category: an N-N-C synthon plus a C-C-C synthon or two N-C-C synthons (which may be the same or different).
Also other examples in the foregoing references and elsewhere. '696 3-Benzoyl-2-phenylpropionicacid (168) and methylhydrazine gave 2methyl-4,6-diphenyl-4,5-dihydro-3(2H)-pyridazinone(169) (BuOH, reflux, 6 h: 45%) and then its didehydro analogue (Brz, AcOH, 70°,3 h: 93%). 1082 0 0 YN Ph From Two Synthons 31 Levulinic acid (4-oxovaleric acid) and phenylhydrazine gave 6-methyl-2phenyl-4,5-dihydro-3(2H)-pyridazinone(neat, reflux or 170". ~%*~~' Also other examples in the foregoing references and elsewhere.
Chemistry of Heterocyclic Compounds: The Pyridazines, Supplement 1, Volume 57