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 6-BROMO-TETRAL-1-ON
66361-67-9

6-BROMO-TETRAL-1-ON synthesis

8synthesis methods
-

Yield:66361-67-9 83%

Reaction Conditions:

Stage #1: 6-amino-1-tetralonewith hydrogen bromide;sodium nitrite in water; for 0.25 h;
Stage #2: with copper(I) bromide in water; for 0.25 h;

Steps:

6-bromo-3,4-dihydronaphthalen-1(2H)-one 3

To the solution of 2 (5 g and 31 mmol) in a mixture of hydrobromic acid (50 mL and47%) and water (50 mL) cooled by a brine/ice bath, a solution of sodium nitrite (2.5 gand 36 mmol) in water (20 mL) was added dropwise. The resulting mixture was stirredfor 15 min before a solution of cuprous bromide (5.14 g and 36 mmol) in hydrobromicacid (20 mL and 47%) was added dropwise. The resulting mixture was then stirred for15 min. The aqueous layers were washed with ethyl acetate (3 15 mL). The organic layerswere combined, dried over Na2SO4, filtered and evaporated. The resulting yellow oil waspuried by chromatography

References:

Chen, Baiyu;Fu, Wei;Li, Jianqi;Li, Wei;Li, Xinwei;Xie, Peng;Zhang, Junjie;Zhang, Wenbo;Zhu, Mengdan [Molecules,2022,vol. 27,# 7,art. no. 2173]

6-BROMO-TETRAL-1-ON Related Search: