Synthesis of Ultraviolet Absorber UV-1130

 

 

کتابخانه الکترونیکی دیتا ساینس

شناسه: Article-9292016

عنوان: Synthesis of Ultraviolet Absorber UV-1130

لینک: http://en.cnki.com.cn/Article_en/CJFDTotal-SLZJ201204009.htm

زبان: چینی

قیمت: ۲۷۰۰ تومان (۱۰ درصد تخفیف اعضاء ویژه)

 

A ultraviolet absorber, UV-1130, is prepared with o-nitroaniline, 3-(3-tert-butyl-4-hydroxy-phenyl)-propionic acid methyl ester and PEG-300 as main materials, and via Michael addition, dealkylation, diazotization, coupling, reduction, esterification and transesterification, the yield of product can be attained 70.7% based on o-nitroaniline. Intermediate 3-(3-tert-Butyl-4-hydroxy-phenyl)-propionic acid methyl ester is prepared by 2 steps, and screened out the corresponding dealkylation catalyst; the inorganic acid of diazotization is hydrochloric acid; in reduction n(intermediate 3)∶n(sodium hydrosulfite)∶n(sodium hydroxide)=1∶۶∶۱۰; the catalyst of transesterification is p-toluene sulfonic acid.

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