Sulfonic acid supported on hydroxyapatite-encapsulated-γ-Fe2O3 nanocrystallites as a magnetically separable catalyst for one-pot reductive amination of carbonyl compounds
A novel, environmentally friendly procedure has been developed for the preparation of secondary or tertiary amines by one-pot reductive amination of carbonyl compounds using sodium borohydride in the presence of a magnetically recoverable sulfonic acid supported on hydroxyapatite-encapsulated-γ-Fe2O3 [γ-Fe2O3@HAP-SO3H] at room temperature. The catalyst was easily separated from the reaction mixture by applying an external magnet and reused for six cycles without significant loss of catalytic activity.
Hydroxybenzylamino derivatives as anti-inflammatory agents
申请人:Merck & Co., Inc.
公开号:US04578390A1
公开(公告)日:1986-03-25
Hydroxybenzylamino derivatives have been prepared from an appropriate hydroxybenzaldehyde and an amine followed by reduction. These compounds are found to be active topical anti-inflammatory agents.
羟基苯甲醛和胺经还原反应制备了羟基苯基氨基衍生物。这些化合物被发现是有效的局部抗炎药物。
Hydroxybenzylamino-aryl compounds, process for preparing and pharmaceutical compositions containing the same
申请人:Merck & Co., Inc.
公开号:EP0081782A1
公开(公告)日:1983-06-22
Hydroxybenzylaminobenzenes of structural formula (I)
are disclosed wherein:
R is
(a) fluoro;
(b) methoxy, ethoxy, n-propoxy or i-propoxy;
(c) methylthio, ethylthio, n-propylthio or i-propylthio;
(d) -OCH2-O;
(e) -COOH; or
(f) aryloxy;
R1 is
(a) unsubstituted or substituted phenyl; or
(b) unsubstituted or substituted heteroaryl;
n is 1 or 2. These compounds have been prepared from an appropriate hydroxybenzaldehyde and an amine followed by reduction. These compounds are found to be active topical anti-inflammatory agents.