1,3-Dihydro-1,3-dioxo-2H-isoindole-2-butanal → 2-[4-(4-Methoxy-5,6,7,8-tetrahydroquinolin-8-ylamino)-butyl]-isoindole-1,3-dione

HRID 1624307

Reaction equation

HRID 1624307 reaction equation
[NH2:1][CH:2]1[C:11]2[N:10]=[CH:9][CH:8]=[C:7]([O:12][CH3:13])[C:6]=2[CH2:5][CH2:4][CH2:3]1.[O:14]=[C:15]1[C:23]2[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=2)[C:17](=[O:24])[N:16]1[CH2:25][CH2:26][CH2:27][CH:28]=O.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[CH3:13][O:12][C:7]1[C:6]2[CH2:5][CH2:4][CH2:3][CH:2]([NH:1][CH2:28][CH2:27][CH2:26][CH2:25][N:16]3[C:17](=[O:24])[C:18]4[C:23](=[CH:22][CH:21]=[CH:20][CH:19]=4)[C:15]3=[O:14])[C:11]=2[N:10]=[CH:9][CH:8]=1

Participants

5

Reactant 3

HCID 771501,3-Dihydro-1,3-dioxo-2H-isoindole-2-butanalHCID 5049666Sodium triacetoxyborohydrideHCID 220186174-Methoxy-5,6,7,8-tetrahydroquinolin-8-amine

Product 1

HCID 691787902-[4-(4-Methoxy-5,6,7,8-tetrahydroquinolin-8-ylamino)-butyl]-isoindole-1,3-dioneYield 54.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Using General Procedure B: Reaction of 8-amino-4-methoxy-5,6,7,8-tetrahydroquinoline (0.297 g, 1.67 mmol) and 4-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-butyraldehyde (0.371, 1.71 mmol) with NaBH(OAc)3 (0.493 g, 2.33 mmol) in CH2Cl2 (8 mL) for 60 minutes followed by purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2—CH3OH) provided 0.345 g (54%) of 2-[4-(4-Methoxy-5,6,7,8-tetrahydro-quinolin-8-ylamino)-butyl]-isoindole-1,3-dione as an off-white solid.

Workup

  1. customfollowed by purification of the crude material by column chromatography on silica gel (20:1 CH2Cl2—CH3OH)

Sources & evidence

ORD record
ord-0840b44d153f49e0ae56d128557489e8
Source dataset
uspto-grants-2014_07
Patent number
US08778967B2

Linked notes

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