叔丁基对羟基茴香醚 、 草酸醛 、 盐酸 在
乙醚 作用下,
以
溶剂黄146 为溶剂,
反应 20.0h,
以to give 105 g of 7-(1,1-dimethyethyl)-5-methoxy-2(3H)-benzofuranone as a light red solid的产率得到7-(1,1-dimethylethyl)-5-methoxy-2(3H)-benzofuranone
参考文献:
名称:
P-aminophenol derivatives, and processes for production of and uses for
Dibenzonaphthyrone of formula (I)
1
wherein A
1
and A
2
independently of each other are unsubstituted or mono- to tetra-substituted o-C
6
-C
18
arylene, with the proviso that formula (I) does not represent a dibenzonaphthyrone of the formula
2
The invention further relates to processes for the preparation thereof, to the use thereof for colouring/pigmenting high-molecular-weight organic material and to substance compositions comprising dibenzonaphthyrones.
p-AMINOPHENOL DERIVATIVE AND PRODUCTION AND APPLICATION THEREOF
申请人:OTSUKA PHARMACEUTICAL FACTORY, INC.
公开号:EP0414913A1
公开(公告)日:1991-03-06
This invention relates to a p-aminophenol derivative of general formula (I) (wherein A, B, Ar, R1, R2 and R3 are as defined above), and its salts, an intermediate for the synthesis thereof, a method for the production of these compounds, a pharmacological composition containing an effective amount of at least one of said derivative and salts, and a method for treating diseases by utilizing the anti-inflammatory action thereof.