HCID 22035097, compound → HCID 21708822, compound

HRID 651551Notes

Reaction equation

HRID 651551 reaction equation
[Cl:1][C:2]1[CH:25]=[CH:24][C:5]2=[N:6][N:7]([C:9]3[CH:14]=[C:13]([CH2:15][CH2:16][O:17][C:18](=[O:22])[C:19]([CH3:21])=[CH2:20])[CH:12]=[CH:11][C:10]=3[OH:23])[N:8]=[C:4]2[CH:3]=1.[CH3:26][O-:27].[Na+].CO>C1(C)C(C)=CC=CC=1>[Cl:1][C:2]1[C:3]2[C:4](=[N:8][N:7]([C:9]3[C:10]([OH:23])=[C:11]([CH2:10][C:11]4[CH:12]=[C:13]([CH3:15])[CH:14]=[C:9]([N:7]5[N:6]=[C:5]6[CH:24]=[CH:25][CH:2]=[CH:3][C:4]6=[N:8]5)[C:26]=4[OH:27])[CH:12]=[C:13]([CH2:15][CH2:16][O:17][C:18](=[O:22])[C:19]([CH3:21])=[CH2:20])[CH:14]=3)[N:6]=2)[CH:5]=[CH:24][CH:25]=1

Participants

4

Reactant 2

HCID 22035097HCID 22035097, compoundHCID 23694274Sodium methanolate methanol

Product 1

HCID 21708822HCID 21708822, compoundYield 70.3%

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Procedure

Ten grams (30.9 mmols) of crude 2-(3′-N,N-diethylaminomethyl-2′-hydroxy-5′-methylphenyl)-2H-benzotriazole obtained following the procedures of Synthesis Example 1 and 11.1 g (31.0 mmols) of 5-chloro-2-(2′-hydroxy-5′-methacryloyloxyethylphenyl)-2H-benzotriazole were dissolved in 64 ml of xylene, and 1.5 ml of a 28% sodium methylate•methanol solution were added thereto. The mixture was then refluxed in a nitrogen stream for 10 hours. After the completion of the reaction, the reaction mixture was cooled to room temperature. Yellow crystals precipitated at this stage were separated through filtration, and recrystallized from chloroform to obtain 13.1 g of 6-(4-chloro-2H-benzotriazol-2-yl)-4-methacryloyloxyethyl-2-[3′-(2H-benzotriazol-2-yl)-2′-hydroxy-5′-methylphenyl]methylphenol (hereinafter abbreviated as “RUVA-2” as white crystals (yield 70.3%, purity 98.8%).

Workup

  1. temperatureThe mixture was then refluxed in a nitrogen stream for 10 hours
  2. customAfter the completion of the reaction
  3. customYellow crystals precipitated at this stage
  4. customwere separated through filtration
  5. customrecrystallized from chloroform

Sources & evidence

ORD record
ord-c2a222ee900048cf972e3f34f9a03b3f
Source dataset
uspto-grants-2001_08
Patent number
US06281313B1

Reaction notes

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