Methacrylic Acid → 2-Propenoic acid, 2-methyl-, 2-(4-benzoyl-3-hydroxyphenoxy)-1-[(4-benzoyl-3-hydroxyphenoxy)methyl]ethyl ester

HRID 621662

Reaktionsgleichung

Reaktionsgleichung von HRID 621662
[C:1]([C:9]1[CH:35]=[CH:34][C:12]([O:13][CH2:14][CH:15]([OH:33])[CH2:16][O:17][C:18]2[CH:23]=[CH:22][C:21]([C:24](=[O:31])[C:25]3[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=3)=[C:20]([OH:32])[CH:19]=2)=[CH:11][C:10]=1[OH:36])(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:37](O)(=[O:41])[C:38]([CH3:40])=[CH2:39]>>[C:37]([O:33][CH:15]([CH2:14][O:13][C:12]1[CH:34]=[CH:35][C:9]([C:1](=[O:8])[C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)=[C:10]([OH:36])[CH:11]=1)[CH2:16][O:17][C:18]1[CH:23]=[CH:22][C:21]([C:24](=[O:31])[C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)=[C:20]([OH:32])[CH:19]=1)(=[O:41])[C:38]([CH3:40])=[CH2:39]

Komponenten

3

Edukt 2

HCID 4093Methacrylic AcidHCID 12422352,2''-Dihydroxy-4,4''-(2-hydroxy-propane-1,3-diyldioxy)dibenzophenone

Produkt 1

HCID 158380072-Propenoic acid, 2-methyl-, 2-(4-benzoyl-3-hydroxyphenoxy)-1-[(4-benzoyl-3-hydroxyphenoxy)methyl]ethyl esterAusbeute 78 %

Versuchsvorschrift

97 g (0.2 mole) of 1,3-bis-(4-benzoyl-3-hydroxyphenoxy)-2-propanol were esterified analogously to Example 1 with 103 g (1.2 moles) of methacrylic acid. Crystallization from ethanol gave 86 g (78 percent of theory) of 1,3-bis-(4-benzoyl-3-hydroxyphenoxy)-prop-2-yl methacrylate in the form of colorless crystals having a melting point of 138° to 139° C. and a purity of 99 percent (HPLC). The UV spectrum gave two absorption maxima at wave lengths of 287 nm (extinction 0.517; extinction coefficient 28,570) and 324 nm (extinction 0.333; extinction coefficient 18,400).

Aufarbeitung

  1. customCrystallization from ethanol

Quellen und Nachweise

ORD-Eintrag
ord-b76b4b98e60a4189850dcc32c1c8f646
Quelldatensatz
uspto-grants-1989_04
Patentnummer
US04824892

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