Amination

The Gabriel reagent is widely used as a nucleophilic aminating agent since its reactivity is reliable and its handling is easy. Recently, a variety of aminating agents analogous to the Gabriel reagent have been reported, for example, tert-butyl methyl iminodicarboxylate, N-(tert-butoxycarbonyl)-p-toluenesulfonamide, sodium diformamide, and di-tert-butyl iminodicarboxylate.

The potassium salt of imide 1 reacts with alkyl halide to give imide 2. 2 is treated with base or acid to give either N-Boc-amine 3 or N-metoxycarbonylamine 4, respectively. Moreover, 1 also serves as an acid nucleopile in the Mitsunobu reaction to allow for the conversion of hydroxyl groups to amino groups. Therefore, 1 is a useful reagent to give mono protected amines.
On the other hand, acetoxime O-(2,4,6-trimethylphenyl)sulfonate 5 has been reported as a useful electrophilic aminating agent. 5 reacts with Grignard reagent in the presence of a catalytic amount of magnesium chloride to afford primary amines in good yields.

A1137 A1137 A1441 A1441 I0497 I0497
B1734 B1734 D2361 D2361 D1672 D1672
M1182 M1182 H0093 H0093 H0258 H0258
H0196 H0196 H0530 H0530 D1899 D1899
B2303 B2303 B1648 B1648 A1632 A1632
C1757 C1757 M0343 M0343 M0886 M0886
P1235 P1235 P0403 P0403 D2479 D2479
I0510 I0510 B2857 B2857 T1184 T1184
A1137 4-Amino-1,2,4-triazole
A1441 Acetoxime O-(2,4,6-Trimethylphenylsulfonate)
I0497 Di-tert-butyl Iminodicarboxylate
B1734 Diethyl N-(tert-Butoxycarbonyl)phosphoramidate
D2361 Diethyl Phosphoramidate
D1672 Diphenylphosphoryl Azide
M1182 Ethyl O-Mesitylsulfonylacetohydroxamate [Precursor of the Powerful Aminating Reagent]
H0093 Hexamethylenetetramine
H0258 Hydroxylamine Hydrochloride
H0196 Hydroxylamine Sulfate
H0530 Hydroxylamine-O-sulfonic Acid
D1899 N,O-Dimethylhydroxylamine Hydrochloride
B2303 N-(tert-Butoxycarbonyl)-2-nitrobenzenesulfonamide
B1648 N-(tert-Butoxycarbonyl)-p-toluenesulfonamide
A1632 N-Allyloxycarbonyl-2-nitrobenzenesulfonamide
C1757 N-Carbobenzoxy-2-nitrobenzenesulfonamide
M0343 O-Methylhydroxylamine Hydrochloride
M0886 O-Methylhydroxylamine Hydrochloride (ca. 40% in Water, ca. 5.4mol/L)
P1235 Phthalimide DBU Salt
P0403 Phthalimide Potassium Salt
D2479 Sodium Diformylamide
I0510 tert-Butyl Methyl Iminodicarboxylate
B2857 tert-Butyl [Bis(4-methoxyphenyl)phosphinyloxy]carbamate
T1184 Trimethylsilylmethyl Azide


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