Hydrochloric Acid → (Z)-3-(5-benzyloxy-2-bromo-4-methylphenyl)-2-benzyloxycarbonylaminoacrylic acid methyl ester

HRID 881598Notes

Reaction equation

HRID 881598 reaction equation
[CH2:1]([O:8][C:9]1[C:10]([CH3:18])=[CH:11][C:12]([Br:17])=[C:13]([CH:16]=1)[CH:14]=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:19][O:20][C:21]([CH:23](P(OC)(OC)=O)[NH:24][C:25]([O:27][CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[O:26])=[O:22].CN(C)C(N(C)C)=N.Cl>ClCCl>[CH3:19][O:20][C:21](=[O:22])/[C:23](/[NH:24][C:25]([O:27][CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[O:26])=[CH:14]/[C:13]1[CH:16]=[C:9]([O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[C:10]([CH3:18])=[CH:11][C:12]=1[Br:17]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 664601,1,3,3-TetramethylguanidineHCID 2734718Methyl 2-{[(benzyloxy)carbonyl]amino}-2-(dimethyl phosphono)acetateHCID 206315825-Benzyloxy-2-bromo-4-methylbenzaldehyde

Product 1

HCID 58437218(Z)-3-(5-benzyloxy-2-bromo-4-methylphenyl)-2-benzyloxycarbonylaminoacrylic acid methyl esterYield 58.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 5-benzyloxy-2-bromo-4-methylbenzaldehyde (0.39 g) and N-(benzyloxycarbonyl)-alpha-phosphonoglycine trimethyl ester (0.38 g) in dichloromethane (2 mL) was added 1,1,3,3-tetramethylguanidine (0.18 g) at room temperature and this mixture was stirred at room temperature for 2 days. To this reaction mixture was added 1 mol/L hydrochloric acid and the precipitated solid was collected by filtration, and washed with water, dried under reduced pressure to give the title compound (0.34 g).

Workup

  1. filtrationthe precipitated solid was collected by filtration
  2. washwashed with water
  3. customdried under reduced pressure

Sources & evidence

ORD record
ord-48ba8b0953e0460abdc6fc23cdb59084
Source dataset
uspto-grants-2015_03
Patent number
US08993616B2

Reaction notes

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