24小时热门版块排行榜    

Znn3bq.jpeg
汕头大学海洋科学接受调剂
查看: 505  |  回复: 2

喻魔风

新虫 (初入文坛)

[求助] 2,5-二氯二苯甲酮的合成与应用

2,5-二氯二苯甲酮的合成与应用 要写综述找不到材料  急急急  求帮助

[ 发自手机版 http://muchong.com/3g ]

[ Last edited by 喻魔风 on 2013-6-25 at 12:34 ]
回复此楼

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

» 本主题相关价值贴推荐,对您同样有帮助:

无所畏惧
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jsczlimin

金虫 (正式写手)

【答案】应助回帖


493070060: 金币+1, 鼓励交流,欢迎常来精化版! 2013-07-11 14:05:12
zhoupeng87: 应助指数+1 2013-07-12 08:22:42
对二氯苯1.5三氯化铝1.2苯甲酰氯1 。 滴加酰氯,吸收氯化氢,慢慢升温至150度至无氯化氢。到入5倍量水中。油层用甲醇重结晶。
2楼2013-07-11 13:43:26
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

tangfh1973

铁杆木虫 (著名写手)

★ ★ ★ ★ ★
zhoupeng87: 金币+5, 欢迎交流 2013-07-30 08:01:08
2,5-Dichlorobenzophenone
To a 22 L, three-necked flask fitted with a thermometer, mechanical stirrer and a Vigreux column connected to an aqueous NaOH scrubbing tower, was added 1,4-dichlorobenzene (3 Kg, 26.4 mol) and benzoyl chloride (2.6 Kg, 18.55 mol).
The mixture was heated to 80° C. to give a homogeneous solution.
Aluminum chloride (5.5 Kg, 41.25 mol) was added over 12 min. with stirring. (The molar ratio of reactants was 2.2:1.4:1.0 (AlCl3: Dichlorobenzene:Benzoyl Chloride)).
The resulting mixture was heated to 140° C. over 60 min followed by heating to 175° C. over 30 min.
Heating was stopped at 175° C.
The mixture was allowed to cool to 80° C. over two hours and poured into a well stirred mixture of ice and water (ca. 25 L water and 15 Kg of ice) over 30 min.
The organic solid was collected by filtration and dissolved in 7 L of toluene.
The solution was washed with aqueous sodium bicarbonate and dried.
Toluene was removed by distillation.
Pure 2,5-dichlorobenzophenone was isolated in 80percent yield after recrystallization from hexane and toluene.
Gas chromatography indicated an absolute yield of 97percent.
人生,幸福不是目的,美德才是准绳
3楼2013-07-29 10:54:26
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 喻魔风 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 一志愿哈工大 085600 277 12材科基求调剂 5+5 chenny174 2026-04-10 36/1800 2026-04-13 22:17 by zhq0425
[考研] 一志愿鲁东大学071000生物学学硕初试分数276求调剂 +8 慕绝cc 2026-04-09 8/400 2026-04-13 14:08 by 张zhihao
[考研] 一志愿中国科学院上海有机所,有机化学356分找调剂 +12 Nadiums 2026-04-09 12/600 2026-04-13 08:50 by lhj2009
[考研] 368化学求调剂 +14 wwwwabcde 2026-04-07 15/750 2026-04-13 08:36 by lhj2009
[考研] 一志愿0807 数一英一 313 有没有二轮调剂 +12 emokidd 2026-04-08 13/650 2026-04-13 08:32 by lhj2009
[考研] +10 李多米lee. 2026-04-12 11/550 2026-04-12 22:58 by yuyin1233
[考研] 22408 352分求调剂 +5 努力的夏末 2026-04-09 5/250 2026-04-12 19:17 by wj165256
[考研] 291求调剂 +11 关忆北. 2026-04-09 12/600 2026-04-12 10:32 by 逆水乘风
[考研] 326求调剂 +6 Shansyn 2026-04-10 6/300 2026-04-12 09:46 by hammer3
[考研] 305求调剂 +7 玛卡巴卡boom 2026-04-11 7/350 2026-04-12 07:35 by zhouxiaoyu
[考研] 296求调剂 +14 汪!?! 2026-04-08 15/750 2026-04-11 20:28 by dongdian1
[考研] 本人女孩 +7 吼吼, 2026-04-10 9/450 2026-04-11 14:45 by ACS Nano——
[考研] 求调剂 +3 胃痉挛累了 2026-04-11 5/250 2026-04-11 14:13 by luhong1990
[考研] 工科273调剂 +6 X1999 2026-04-09 7/350 2026-04-11 10:23 by zhq0425
[考研] 275求调剂 +9 1624447980 2026-04-08 10/500 2026-04-11 10:20 by Delta2012
[考研] 22408 366分,本科211,一志愿西工大 +4 Rubt 2026-04-09 4/200 2026-04-10 19:51 by chemisry
[考研] 314求调剂 +18 xhhdjdjsjks 2026-04-09 19/950 2026-04-10 18:53 by HPUCZ
[考研] 一志愿矿大,材料工程专硕314分,0856可调都可以 +15 无懈可击的巨人 2026-04-09 15/750 2026-04-10 18:10 by hmn_wj
[考研] 086000生物与医药调剂 +7 awwwwwooooo 2026-04-09 7/350 2026-04-09 13:31 by 北极159263
[考研] 一志愿西南大学生物学学硕344 求生物学相关调剂/生物与医药 +7 超人不会飞@ 2026-04-08 7/350 2026-04-09 09:35 by gong120082
信息提示
请填处理意见