| 查看: 880 | 回复: 8 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
[交流]
【求助】硫酰氯苯环氯化
|
|||
|
各位大虾，请问高手，是否有人知道用硫酰氯作氯化剂进行苯环氯化 请站内消息联系我，谢谢！！！ [ Last edited by mooncakexzj on 2009-3-29 at 15:50 ] |
回复此楼» 猜你喜欢
材料调剂
已经有3人回复
-
070300化学279求调剂
已经有4人回复
-
一志愿华东理工085601材料工程303分求调剂
已经有14人回复
-
软件工程求调剂22软工296分求调剂，接受跨调
已经有4人回复
-
材料工程085601，270求调剂
已经有3人回复
-
288求调剂，一志愿华南理工大学071005
已经有10人回复
-
085600材料与化工专硕329 求调剂
已经有20人回复
-
275求调剂
已经有5人回复
-
一志愿山东大学化学与化工学院材料与化工专硕，360分求调剂
已经有5人回复
-
本科211，293分请求调剂
已经有11人回复
6楼2009-03-31 15:18:16
3楼2009-03-29 15:38:54
xqj666666
铁杆木虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 8876.5
- 帖子: 212
- 在线: 12.1小时
- 虫号: 582245
- 注册: 2008-07-25
- 性别: GG
- 专业: 污染控制化学
4楼2009-03-31 11:53:11
★
nealu(金币+1,VIP+0):谢谢应助！ 3-31 15:28
nealu(金币+1,VIP+0):谢谢应助！ 3-31 15:28
|
在OS上有一片文章,你可以看看. 对羟基苯甲酸乙酯的氯化. Ethyl 3,5-dichloro-4-hydroxybenzoate. A tared 2-l. round-bottomed flask is equipped with an efficient reflux condenser connected through a calcium chloride drying tube to a gas-absorption trap, and is set up on a steam bath in a hood. In the flask are placed 250 g. (1.5 moles) of ethyl 4- hydroxybenzoate (Note 1) and 444 g. (266 ml., 3.3 moles) of sulfuryl chloride. The mixture is warmed on the steam bath (gently at first) until gas is no longer evolved (about 1 hour). Then 50 ml. of sulfuryl chloride is added to the reaction flask, and the warming is continued until gas is no longer evolved. This entire chlorination procedure requires about 1.5 hours. The excess sulfuryl chloride is then removed by attaching a water pump through an empty safety flask to the reaction flask and warming on the steam bath until no evidence of vapor can be detected above the white solid in the reaction flask. The residue in the flask should weigh about 350 g. (Note 2). Recrystallization from a mixture of 600 ml. of ethanol and 140 ml. of water gives 315–334 g. (83–88%) of ethyl 3,5-dichloro-4-hydroxybenzoate hydrate (Note 3) melting at 110–114° with decomposition. http://www.orgsyn.org/orgsyn/pdfs/CV3P0267.pdf [ Last edited by TJFWAL on 2009-3-30 at 19:01 ] |
5楼2009-03-31 15:00:30
10