SDS of cas: 3685-23-2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: cis-4-Aminocyclohexane carboxylic acid, is researched, Molecular C7H13NO2, CAS is 3685-23-2, about Knoevenagel Reaction. Kinetic study of the reaction of (+)-3-methyl-cyclohexanone with malononitrile. Author is Prout, Franklin S.; Beaucaire, Victor D.; Dyrkacz, Gary R.; Koppes, William M.; Kuznicki, Robert E.; Marlewski, Theordore A.; Pienkowski, James J.; Puda, Jacqueline M..
The condensation of malononitrile with (+)-3-methylcyclohexanone produced an 80-85% yield of (-)-3-methylcyclohexylidenemalononitrile. The reaction, followed polarimetrically in aqueous alc., is kinetically second order and efficiently catalyzed by weak bases (ω-amino acids, cyclic amino acids, NH4OAc) furnishing solutions having an apparent pH 7.5-8.0. With β-alanine as catalyst, the Ea was 7.6 kcal/mole compared to 11 kcal/mole uncatalyzed. Stronger bases (Barbital, NaOAc, LOAc, KF, piperidine) effect more rapid condensation but poorer kinetics because of telomerization of malononitrile at the higher pHs.
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Reference:
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate