Water → HCID 18984441, compound

HRID 5832Notes

Reaction equation

HRID 5832 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[S:13][C:12]3[CH:14]=[CH:15][C:16]4[C:21]([C:11]=3[NH:10][CH2:9]2)=[CH:20][CH:19]=[CH:18][CH:17]=4)=[CH:4][CH:3]=1.C(=O)([O-])O.[Na+].O.[C:28](Cl)(=[O:31])[CH:29]=[CH2:30]>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]2[S:13][C:12]3[CH:14]=[CH:15][C:16]4[C:21]([C:11]=3[N:10]([C:28](=[O:31])[CH:29]=[CH2:30])[CH2:9]2)=[CH:20][CH:19]=[CH:18][CH:17]=4)=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 962WaterHCID 13140Acryloyl chlorideHCID 516892Sodium BicarbonateHCID 189844023-(4-chlorophenyl)-2,3-dihydro1H-naphtho[2,1-b][1,4]thiazine

Product 1

HCID 18984441HCID 18984441, compoundYield 78%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a mixture of 3-(4-chlorophenyl)-2,3-dihydro1H-naphtho[2,1-b][1,4]thiazine (1.50 g), sodium hydrogen carbonate (1.0 g), methylene chloride (30 ml) and water (15 ml) is added dropwise with stirring a solution of acryloyl chloride (0.90 g) in methylene chloride (10 ml) under ice cooling. The mixture is stirred at room temperature for 3 hours. The organic layer is separated, washed, dried and distilled to remove the solvent. The residue is chromatographed on silica gel (toluene : acetone =50 : 1) to give 3-(4-chlorophenyl)-1-propenoyl-2,3-dihydro-1H-naphtho[2,1-b][1,4]thiazine (1.37 g, 78 %) as powder.

Workup

  1. additionis added dropwise
  2. customThe organic layer is separated
  3. washwashed
  4. customdried
  5. distillationdistilled
  6. customto remove the solvent
  7. customThe residue is chromatographed on silica gel (toluene : acetone =50 : 1)

Sources & evidence

ORD record
ord-5c1334df7ea540ff925a09322191a344
Source dataset
uspto-grants-1993_09
Patent number
US05246929

Reaction notes

Loading…