| US 7,517,983 B2 | ||
| Hydrazines and derivatives production process from hydrazines and dicarboxylic acid | ||
| Cláudio Cerqueira Lopes, Rio de Janeiro (Brazil); Rosângela Sabattini Capella Lopes, Rio de Janeiro (Brazil); Jarí Nobrega Cardoso, Rio de Janeiro (Brazil); Jacqueline Alves da Silva, Rio de Janeiro (Brazil); and Letícia Gomes Ferreira, Rio de Janeiro (Brazil) | ||
| Assigned to Universidade Federal Do Rio De Janeiro-UFRG, Rio de Janeiro (Brazil) | ||
| Appl. No. 10/595,943 PCT Filed Nov. 25, 2004, PCT No. PCT/BR2004/000236 § 371(c)(1), (2), (4) Date May 22, 2006, PCT Pub. No. WO2005/051870, PCT Pub. Date Jun. 09, 2005. |
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| Claims priority of application No. 0307864 (BR), filed on Nov. 25, 2003. | ||
| Prior Publication US 2007/0128680 A1, Jun. 07, 2007 | ||
| Int. Cl. C07D 237/32 (2006.01); C07D 237/04 (2006.01); C07D 231/28 (2006.01) | ||
| U.S. Cl. 544—240 [544/237; 548/366.4; 548/366.7; 548/367.1] | 16 Claims |
| 1. Process to produce hydrazides, comprising the reaction of a dicarboxylic acid having general formula (I):
(R1CH)n (COOH)2) (I)
wherein R1 is selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, phenyl, aromatic heterocyclic ring
having a heteroatom selected from the group consisting of S, O, and N, heterocyclic non-aromatic ring having a heteroatom
selected from the group consisting of S, O and N, cycloalkyl containing from 3 to 8 carbon atoms, cycloalkenyl containing
from 3 to 8 carbon atoms, and cycloalkynyl containing from 7 to 8 carbon atoms; and wherein the R1 groups can be further substituted
and/or branched;
n is 1 or 2;
with a hydrazine of general formula (II)
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