CAS号 [121-02-8] 生产工艺。 2-甲基-5-硝基苯磺酰氯
CAS名:benzenesulfonyl chloride, 2-methyl-5-nitro- 历史参考文献:Beil. 11. 97; E2, 43.
用途:酸性黄25, 48. 酸性橙19, 41. 酸性红118, 医药。 LookChem网登录生产与经营单位60家。 反应类别:氯磺化。
BIOS 1153, 42-43.
(=胶卷PB 85687)。 4-Nitrotoluene-2-sulphonic chloride. (Leverkusen). 英国人摘译自德文(无资料来源)。
反应式:本人有加注,暂未找到德文原件。

Outline:
p-Nitrotoluene (C.P. 50-52℃.) is heated with 3.9 mol. of chlorosulphonic acid and the sulphonyl
chloride precipitated by drowning in ice and water.
Plant: 1 Cast
iron pan 2,700 l. with gate agitator, gas heating and coil for water
cooling. Still is connected to
absorption apparatus for hudrochloric acid given off during reaction
1
Vat, brick-lined, 12,000 l. with blade agitator.
1
Brick-lined nutsche.
1
8,000 l. cast iron measure vessel for chlorosulphonic acid.
Materials: 1400 kg. Chlorosulphonic qcid. 420 kg.
p-Nitrotoluene = 213 kg. nitrite.
4-5 tones Ice.
Process:
1400 kg. of chlorosulphonic acid are
measured into the sulphonatiing pan. 420
kg. of p-nitrotoluene are charged with agitation and heated to 45℃. to
effect
solution. The temperature is then
controlled by coil cooling. After 1 hour
it is heated carefully to 70℃., the temperature then rising to 80-82℃.
without
further heating. When the temperature
begins to fall, it is heated slowly to 98-103℃. and held 2 hours at this temperature. It is then cooled by
coil to 20℃., the agitator stopped and the batch left
until the following morning. The
sulohonation is run into the agitated vat (C.I. brick-lined) containing
1000 l. water
and 4 tones of ice, agitated for 40 min. (temperature 15℃.) and filtered on the nutsche and washed
acid-free with cold water.
Yield: 75% theory. The product is required for p-toluidine-2-sulphonanilide
(page 119).
张澍声 《精细化工中间体工业生产技术》 1996年。 P. 65. 4-硝基甲苯-2-磺酰氯。 译自BIOS 1153, 42.
在2750 L铸铁锅中加入1400 kg 氯磺酸,在搅拌下加入420 kg凝固点为50-52℃的对硝基甲苯,同时加热到45℃以加强溶解,反应开始后用冷
却蛇管控制温度。1小时后仔细加热到70℃,在没有加热下温度又升至80-82℃。当温度开始下降时,缓缓加热至98-103℃,在此温度保持2小时,
然后用蛇管冷却到20℃,停止搅拌放置过夜。
磺化物流入10000 L铸铁衬砖锅中,其中放有1000 L水和·4吨冰,搅拌40分钟,温度15℃,抽滤,冷水洗至不含酸。产品得率为75%。
产品用于对甲苯胺-3-磺酰苯胺。
学习与思考:
侯乐山 主编 《中国精细化工产品集 – 原料及中间体10396种》。2006年。
中国化工信息中心 全国精细化工原料及中间体行业协作组 出版。 P. 681.抄录如下:
2-甲基-5-硝基苯磺酰氯
英文名:2-Methyl-5-nitrobenzenesulfonyl
chloride
CAS:
121-02-8 物质登记状态:未登记
生产厂:苏州大和化工有限公司;苏州诚和医药化学有限公司。
抄注:本人抄录上述手册目的是:要说明我们的情报资料交流,为什么是这个水平。特别是有“全国”二字的图书。
至少还有好多早已公开的资料没有好好利用,这是本人上网的目的,当然上网的资料与创新无关!
陈忠源 2018年6月9日星期六