Sodium Hydroxide → 1,1-Dimethylethyl 4-[6-(benzyloxy)-3-(3,4-dimethoxybenzyl)-2,4-dioxo-3,4-dihydroquinazolin-1(2H)-yl]piperidine-1-carboxylate

HRID 403549Notes

Reaction equation

HRID 403549 reaction equation
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([N:15]([C:29]([O:31]CC(C)C)=O)[CH:16]2[CH2:21][CH2:20][N:19]([C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH2:18][CH2:17]2)=[C:11]([C:36](=[O:49])[NH:37][CH2:38][C:39]2[CH:44]=[CH:43][C:42]([O:45][CH3:46])=[C:41]([O:47][CH3:48])[CH:40]=2)[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-].[Na+]>ClCCCl.C(Cl)Cl>[CH2:1]([O:8][C:9]1[CH:10]=[C:11]2[C:12](=[CH:13][CH:14]=1)[N:15]([CH:16]1[CH2:21][CH2:20][N:19]([C:22]([O:24][C:25]([CH3:26])([CH3:27])[CH3:28])=[O:23])[CH2:18][CH2:17]1)[C:29](=[O:31])[N:37]([CH2:38][C:39]1[CH:44]=[CH:43][C:42]([O:45][CH3:46])=[C:41]([O:47][CH3:48])[CH:40]=1)[C:36]2=[O:49])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 666037821,1-Dimethylethyl 4-[{4-(benzyloxy)-2-[(3,4-dimethoxybenzyl)carbamoyl]phenyl}(isobutoxycarbonyl)amino]piperidine-1-carboxylate2×

Product 1

HCID 595870451,1-Dimethylethyl 4-[6-(benzyloxy)-3-(3,4-dimethoxybenzyl)-2,4-dioxo-3,4-dihydroquinazolin-1(2H)-yl]piperidine-1-carboxylateYield 296.5%

Reagents, catalysts & solvents 2

HCID 111,2-DichloroethaneSolventHCID 6344DichloromethaneSolvent

Procedure

A mixture of 2.5 g of 1,1-dimethylethyl 4-[{4-(benzyloxy)-2-[(3,4-dimethoxybenzyl)carbamoyl]phenyl}(isobutoxycarbonyl)amino]piperidine-1-carboxylate obtained in stage 1.4 and 7.4 g of NaOH in 18.5 ml of DCE is irradiated under a microwave field at 110° C. for 30 min. The same reaction is repeated with 2 other lots of 2.5 g of 1,1-dimethylethyl 4-[{4-(benzyloxy)-2-[(3,4-dimethoxybenzyl)carbamoyl]phenyl}-(isobutoxycarbonyl)amino]piperidine-1-carboxylate. The 3 reaction media are combined. The combined product is taken up in DCM, washed with water, dried over Na2SO4 and filtered, and the solvent is evaporated under reduced pressure to give 6.6 g of expected product.

Workup

  1. customis irradiated under a microwave field at 110° C. for 30 min
  2. customThe same reaction
  3. customThe 3 reaction media
  4. washwashed with water
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. customthe solvent is evaporated under reduced pressure

Sources & evidence

ORD record
ord-770ba39735b643519d37c935b77f2338
Source dataset
uspto-grants-2014_06
Patent number
US08748441B2

Reaction notes

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