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| Patents for C07B 43 - Formation or introduction of functional groups containing nitrogen (1,809) |
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| 09/21/1976 | US3981933 Sulfuric acid, nitric acid, toluene in methylene chloride | | 08/31/1976 | US3978049 Process for the preparation of hydrazine compounds | | 08/24/1976 | US3976704 Nitration process | | 06/22/1976 | US3965200 Aromatic compound nitration catalyzed by aromatic sulfonic acid supported on solid carrier | | 05/18/1976 | US3957889 Selective nitration of aromatic and substituted aromatic compositions | | 03/30/1976 | US3947515 Process for the preparation of pure, aromatic o-hydroxy-carboxylic acid aryl amides | | 03/09/1976 | US3943132 Process for the preparation of hydrazones | | 01/20/1976 | US3933852 Nitration of n-methylphthalimide with hno3 in h2so4 | | 01/06/1976 | US3931106 Generation and use of dinitrile oxides |
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