Nitroindoline → 2,3-dihydro-1H-indol-1-amine

HRID 1815130Notes

Reaction equation

HRID 1815130 reaction equation
[N+:1]([N:4]1[C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[CH2:6][CH2:5]1)([O-])=O>[Pd]>[NH2:1][N:4]1[C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[CH2:6][CH2:5]1

Participants

3

Reactant 1

HCID 21959507Nitroindoline

Product 1

HCID 27609322,3-dihydro-1H-indol-1-amine

Reagents, catalysts & solvents 1

HCID 23938PalladiumCatalyst

Procedure

Alternatively, substituted amino-indolines 67 are prepared from the nitroindoline 62. Nitroindoline 62, is reacted with an acid chloride to form an amide. Further treatment with a primary or secondary amine, preferably a secondary amine, such as in the presence of NaI, at a temperature above about 50° C., and preferably at about 70° C. yields the nitroindoline 65. The nitro compound 65 is hydrogenated, such as with H2 in the presence of a catalyst, such as Pd/C, to yield the amino-indoline 66. The carbonyl is reduced, such as with BH3-THF yields 1-aminoalkyl-indolines 67.

Sources & evidence

ORD record
ord-659a6fc22d9c481487391bbddc30bfa1
Source dataset
uspto-grants-2005_04
Patent number
US06878714B2

Reaction notes

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