Acetic Acid → 4-(2-Pyridinesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(pyrrolidin-1-ylmethyl)indol-2-yl]isoindolinone

HRID 21302Notes

Reaction equation

HRID 21302 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[S:7]([O:10][C:11]1[C:19]([O:20][CH3:21])=[CH:18][C:17]([C:22]2[N:23]([C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[C:24]3[C:29]([CH:30]=2)=[CH:28][C:27]([CH:31]=O)=[CH:26][CH:25]=3)=[C:16]2[C:12]=1[CH2:13][NH:14][C:15]2=[O:40])(=[O:9])=[O:8].[NH:41]1[CH2:45][CH2:44][CH2:43][CH2:42]1.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(#N)C>[N:1]1[CH:6]=[CH:5][CH:4]=[CH:3][C:2]=1[S:7]([O:10][C:11]1[C:19]([O:20][CH3:21])=[CH:18][C:17]([C:22]2[N:23]([C:33]([O:35][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:34])[C:24]3[C:29]([CH:30]=2)=[CH:28][C:27]([CH2:31][N:41]2[CH2:45][CH2:44][CH2:43][CH2:42]2)=[CH:26][CH:25]=3)=[C:16]2[C:12]=1[CH2:13][NH:14][C:15]2=[O:40])(=[O:8])=[O:9]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 31268PyrrolidineHCID 5049666Sodium triacetoxyborohydrideHCID 86628320HCID 86628320, compound

Product 1

HCID 866283214-(2-Pyridinesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(pyrrolidin-1-ylmethyl)indol-2-yl]isoindolinoneYield 32%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

In a similar manner to Step 2 of Example 6, 4-(2-pyridinesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-formylindol-2-yl]isoindolinone (0.332 g, 0.589 mmol) was dissolved in acetonitrile (10.0 mL), and the solution was treated with pyrrolidine (0.983 mL, 11.8 mmol), acetic acid (0.674 mL, 11.8 mmol) and sodium triacetoxyborohydride (0.375 g, 1.77 mmol), followed by purification of the residue by flash column chromatography (chloroform/methanol=85/15) to obtain 4-(2-pyridinesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(pyrrolidin-1-ylmethyl)indol-2-yl]isoindolinone (0.116 g, 32%).

Workup

  1. customfollowed by purification of the residue by flash column chromatography (chloroform/methanol=85/15)

Sources & evidence

ORD record
ord-ca5cd20c1eca451aaef482280573bc8d
Source dataset
uspto-grants-2010_06
Patent number
US07745641B2

Reaction notes

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