1186-70-5Relevant articles and documents
1H Nuclear Magnetic Resonance Study of the Kinetics of the Reaction of N,N-Dialkylformamide Dimethyl Acetals with Secondary Amines
Wawer, Iwona,Osek, Jerzy
, p. 993 - 996 (1988)
Rate constants and activation parameters (ΔG, ΔH, ΔS) for the reactions of N,N-dialkylformamide dimethyl acetals with four secondary amines have been estimated by 1H n.m.r. spectroscopy.The reactions are reversible and obey a second-order kinetic equation.Substitution of one methoxy group of the amide acetal by the amine entity is found to give ester aminals which are subject to decomposition (ΔG 92-103 kJ mol-1).A transamination reaction yields a new amide acetal at higher temperatures (ΔG 115 kJ mol-1).On the basis of the kinetic data, the mechanism of these reactions is discussed.
Preparation of 1-nitroanthraquinone-2-carboxylic acid
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, (2008/06/13)
1-Nitroanthraquinone-2-carboxylic acid of the formula I STR1 is prepared by treating novel 2-substituted 1-nitroanthraquinones of the general formula II STR2 where R is --CH=CH--R1 or --CH2 --CHO, where R1 is C1 -C5 -dialkylamino or a cyclic 5- or 6-membered amine which may contain further hetero atoms, with oxidizing agents free of heavy metal.
Reaction of Singlet Oxygen with Enamino Carbonyl Systems. A General Method for the Synthesis of α-Keto Derivatives of Lactones, Esters, Amides, Lactams, and Ketones
Wasserman, Harry H.,Ives, Jeffrey L.
, p. 3573 - 3580 (2007/10/02)
A general method for the introduction of a ketone α to the carbonyl group of a ketone, lactone. ester, substituted amide, or lactam has been developed involving the formation and dye-sensitized photooxygenation of enamino carbonyl intermediates.