HSiCl3-Mediated Reduction of Nitro-Derivatives to Amines: Is Tertiary Amine-Stabilized SiCl2 the Actual Reducing Species?The mechanism of a recently reported, highly chemoselective metal-free protocol of wide general applicability for the reduction of aromatic and aliphatic nitro-derivatives to amines ...
The Nef reaction of conjugated nitroalkenes 222 entails a preliminary regioisomerization of the double bond by 1,4-diazabicyclo[2.2.2]octane (DABCO) leading to the corresponding allyl derivatives which are then converted into enones 223 by the usual mechanism. The reaction is also effective on ...
Tertiary amine promoted hydrolysis of 1-alkene-1-sulfonyl chlorides For the reaction of 1 or 3 in the absence of tertiary amines evidence is presented for a direct displacement on sulfur mechanism leading to the alkenesulfonate anion, plus a small proportion (up to 15%) of formation of the ...
The mechanism of action in chemical synthesis involves the incorporation of the ethyl nitroacetate molecule into the desired product, leading to the formation of new chemical bonds. Flavor and Fragrance: This compound is also used in the production of flavors and fragrances. Its purpose in this ...
Theoretical Studies of Oxidative Addition of EE Bonds (E = S, Se, Te) to Palladium(0) and Platinum(0) Complexes The density functional method has been applied to investigate the mechanism and controlling factors of REER (R = H, Me and E = S, Se, Te) oxidative additio... JM Gonzales...
5-nitro- (9CI); 2-Pyrimidinamine,5-nitro; 5-Nitro-2-pyrimidinamine; 5-nitropyrimidin-2-amin; 5-nitropyrimidin-2-amine; 5-Nitro-pyrimidin-2-ylamin; 5-Nitro-pyrimidin-2-ylamine; 5-nitropyrimidin-2-ylamine; 5-nitropyrimidine-2-ylamine; EINECS 221-348-1; MFCD00006103; TIMTEC-BB SBB00...
Nonaromatic nitro groups were shown to give rather narrow N14 n.m.r. peaks. Their chemical shifts are characterized by a very regular dependence on the electronegativity of the rest of the molecule. Spectral identification of nitramines and primary, secondary, and tertiary nitroalkanes is possible...
Enzymatic N-oxidation is the dominant natural nitration mechanism (Kersten & Dorrestein, 2010), in which a preinstalled substrate amine group is converted into the nitro group. Multiple types of N-oxidases with diverse cofactors have been identified to enable this conversion on the sugar or ...
The path of amino nitrogens in the nitrolysis of hexamethylenetetramine (hexamine) to a mixture of the homologous cyclic methylenenitramines, 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclo octane (HMX) and 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX), was traced using nitrogen-15. The equi...
These usually occur in two steps to form an amine via a hydroxylamine. Such processes are strongly dependent on the pH, the number of nitro groups per molecule, their relative position on the ring, and the nature and position of other substituents present on the aromatic system [4]. In ...