24-01-2019 дата публикации
Номер: US20190023633A1
Принадлежит:
The invention relates to a process for preparing substituted 2-arylethanols of the formula (I) by reacting Grignard compounds of the formula (II) in the presence of a copper compound with ethylene oxide. Moreover, the invention relates to novel substituted 2-arylethanols of the formula (I). 2. Process for preparing a compound of formula (I) according to claim 1 , in which{'sup': 1', '5', '6, 'sub': 1', '6', '1', '2', '1', '4', '1', '4, 'R, Rindependently of one another represent C-C-alkyl, C-C-fluoroalkyl having 1 to 5 fluorine atoms, phenyl optionally substituted by C-C-alkyl, C-C-alkoxy, fluorine or chlorine, fluorine, chlorine or a radical OR, where'}{'sup': '6', 'sub': 1', '6', '1', '2, 'Rrepresents C-C-alkyl, C-C-fluoroalkyl having 1 to 5 fluorine atoms or phenyl,'}{'sup': 2', '3', '4', '6, 'sub': 1', '6', '1', '2', '1', '4', '1', '4, 'R, R, Rindependently of one another represent hydrogen, C-C-alkyl, C-C-fluoroalkyl having 1 to 5 fluorine atoms, phenyl optionally substituted by C-C-alkyl, C-C-alkoxy, fluorine or chlorine, fluorine, chlorine or a radical OR, where'}{'sup': '6', 'sub': 1', '6', '1', '2, 'Rrepresents C-C-alkyl, C-C-fluoroalkyl having 1 to 5 fluorine atoms or phenyl.'}3. Process for preparing a compound of formula (I) according to claim 1 , in which{'sup': 1', '5', '6, 'R, Rindependently of one another represent methyl, ethyl, n-propyl, iso-propyl, trifluoromethyl, phenyl optionally substituted by methyl, ethyl, n-propyl, iso-propyl, methoxy, ethoxy or fluorine, fluorine, chlorine or a radical OR, where'}{'sup': '6', 'sub': 2', '3', '2', '5, 'Rrepresents methyl, ethyl, n-propyl, iso-propyl, n-butyl, tert-butyl, CHF, CFor CFand'}{'sup': 2', '3', '4', '6, 'R, R, Rindependently of one another represent hydrogen, methyl, ethyl, n-propyl, iso-propyl, trifluoromethyl, phenyl optionally substituted by methyl, ethyl, n-propyl, iso-propyl, methoxy, ethoxy or fluorine, fluorine, chlorine or a radical OR, where'}{'sup': '6', 'sub': 2', '3', '2', '5, ' ...
Подробнее