Formaldehyde → HCID 68109166, compound

HRID 385108Notes

Reaction equation

HRID 385108 reaction equation
[S:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[NH:3][CH2:2]1.NC1C=CC=CC=1S.C=O.C(N(C(C)C)CC)(C)C.[CH2:29]([O:36][C:37]1[C:45]([C:46]([F:49])([F:48])[F:47])=[CH:44][C:40]([C:41](Cl)=[O:42])=[CH:39][C:38]=1[O:50][CH3:51])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1>ClCCl>[CH2:29]([O:36][C:37]1[C:45]([C:46]([F:47])([F:48])[F:49])=[CH:44][C:40]([C:41]([N:3]2[C:4]3[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=3[S:1][CH2:2]2)=[O:42])=[CH:39][C:38]=1[O:50][CH3:51])[C:30]1[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=1

Participants

7

Reactant 5

HCID 712FormaldehydeHCID 87132-AminothiophenolHCID 81531DiisopropylethylamineHCID 96588BenzothiazolineHCID 86668173HCID 86668173, compound

Product 1

HCID 68109166HCID 68109166, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

2,3-dihydro-1,3-benzothiazole synthesized from 2-aminobenzenethiol (346 mg) and 37% formalin (0.23 mL) in the same manner as in Example 1 was dissolved in dichloromethane (3 mL), and diisopropylethylamine (0.63 mL) and 4-benzyloxy-3-methoxy-5-trifluoromethylbenzoyl chloride (657 mg) were added to the solution, and then the mixture was stirred at room temperature for 1 hour. The solvent was distilled off under reduced pressure and water was added, and then the mixture was extracted with ethyl acetate. The organic layer was washed with 1N hydrochloric acid, 1N sodium hydroxide and saturated brine, and then dried over anhydrous sodium sulfate. The solvent was distilled off under reduced pressure and the obtained residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=6:1) to obtain the title compound (578 mg) as a yellow oily substance.

Workup

  1. distillationThe solvent was distilled off under reduced pressure and water
  2. additionwas added
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe organic layer was washed with 1N hydrochloric acid, 1N sodium hydroxide and saturated brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. distillationThe solvent was distilled off under reduced pressure
  7. customthe obtained residue was purified by silica gel column chromatography (n-hexane:ethyl acetate=6:1)

Sources & evidence

ORD record
ord-31f0cd90b56b4345b97bab2a6807f5f7
Source dataset
uspto-grants-2013_02
Patent number
US08367843B2

Reaction notes

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