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 Methyl 1-[(2'-cyanobiphenyl-4-yl)methyl]-2-ethoxy-1H-benzimidazole-7-carboxylate
139481-44-0

Methyl 1-[(2'-cyanobiphenyl-4-yl)methyl]-2-ethoxy-1H-benzimidazole-7-carboxylate synthesis

9synthesis methods
-

Yield:139481-44-0 86%

Reaction Conditions:

with acetic acid at 80; for 1 h;

Steps:

1

To a solution of compound 8 in tetraethyl orthocarbonate (5 mL), acetic acid (0.37 g) was added, and the mixture was stirred at 80 °C for 1 h, the reaction mixture was concentrated, and the residue was dissolved in ethyl acetate. Washed with water, evaporated to dryness, The crystal was recrystallized from ethyl acetate-hexane.Obtained 2.01g of colorless crystal,Yield 86%, compound 5.

References:

CN108658961,2018,A Location in patent:Paragraph 0011; 0062; 0064

Methyl 1-[(2'-cyanobiphenyl-4-yl)methyl]-2-ethoxy-1H-benzimidazole-7-carboxylate Related Search: