天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 5-BROMO-2,3-DIMETHOXY-BENZOIC ACID
72517-23-8

5-BROMO-2,3-DIMETHOXY-BENZOIC ACID synthesis

13synthesis methods
-

Yield:72517-23-8 89%

Reaction Conditions:

Stage #1: 2,3-dihydroxy-5-bromobenzoic acid;dimethyl sulfatewith potassium carbonate in acetone at 60; for 20 h;Inert atmosphere;
Stage #2: with sodium hydroxide in methanol;water;acetone at 70; for 2 h;Inert atmosphere;regioselective reaction;

References:

Hierold, Judith;Baek, Sohee;Rieger, Rene;Lim, Tae-Gyu;Zakpur, Saman;Arciniega, Marcelino;Lee, Ki Won;Huber, Robert;Tietze, Lutz F. [Chemistry - A European Journal,2015,vol. 21,# 47,p. 16887 - 16894] Location in patent:supporting information