Reduction of 1-substituted anthraquinones to 1- and 4-substituted anthrones
作者:V. A. Loskutov
DOI:10.1007/bf02494377
日期:1997.2
The regioselectivity of reduction of 1-substituted anthraquinones to 1- or 4-substituted anthrones is determined by both the nature of the substituent and the type of the reducing system used.
1-取代蒽醌还原为1-或4-取代蒽酮的区域选择性由取代基的性质和所用还原系统的类型决定。
9-Anthryloxyaminoalkanes and related compounds, processes for their preparation and pharmaceutical compositions containing them
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0132351A2
公开(公告)日:1985-01-30
Compounds useful for treating inflammation, pain and swelling, represented by the formula:
and the pharmaceutically acceptable acid addition salts thereof, wherein:
Y and Z are each independently halo, alkyl or alkoxy;
I and m are each independently 0 or an integer of 1-4;
b is an integer of 2-12; and
X is selected from:
in which
R1 and R2 are independently H, alcyl or cycloalkyl;
R3 is H, alkyl or CH2CH20H; and
n is an integer of 3-7.
用于治疗炎症、疼痛和肿胀的化合物,由式:
及其药学上可接受的酸加成盐,其中
Y 和 Z 各自独立地为卤代、烷基或烷氧基;
I 和 m 各自独立地为 0 或 1-4 的整数;
b 是 2-12 的整数;以及
X 选自
其中
R1 和 R2 独立地为 H、烷基或环烷基;
R3 是 H、烷基或 CH2CH20H;以及
n 是 3-7 的整数。
Verfahren zur Herstellung von Benzanthron
申请人:CIBA-GEIGY AG
公开号:EP0134753A1
公开(公告)日:1985-03-20
Beschrieben wird ein Verfahren zur Herstellung von Benzanthron durch Umsetzen von Anthrachinon mit Glycerin und/oder Acrolein unter Verwendung von Anthron als Reduktionsmittel.
Benzanthron ist ein wichtiges Zwischenprodukt für Farbstoffe und dient vor allem zur Herstellung von Küpenfarbstoffen.
A polybutadiene composition comprising a polybutadiene type polymer and a compound represented by the following formula (I):
1
wherein Ar
1
and Ar
2
each independently represent an aromatic ring, X and Y each independently represent an alkylene group having one or two carbon atoms, an oxygen atom or a carbonyl group, is provided; and thermal degradation of the polybutadiene type polymer can be prevented even in an air-free environment.
一种聚丁二烯组合物,由聚丁二烯类聚合物和下式(I)所代表的化合物组成:
1
其中 Ar
1
和 Ar
2
分别独立地代表一个芳香环,X 和 Y 分别独立地代表一个或两个碳原子的亚烷基、一个氧原子或一个羰基;即使在无空气环境中,也能防止聚丁二烯型聚合物的热降解。