问题：请各位前辈帮我查查这个物质的CAS号是什么？？？？？
类型：求助 (悬赏分:5分)
提问：qq40727140
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版块：有机化学问题(jimuwei,fpcwin1211,netpanda,yjgzfl,Ftian,)
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回复：4
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时间：2012-04-14 13:31:21 编辑加入/取消收藏订制/取消短消息举报该贴

我现在在做一个实验，最后的产物为：S-苄基S`-三乙氧基硅烷基丙基三硫代碳酸，英文名：S-Benzyl S`-triethoxy silyl propyl tri thio carbonate ；文献资料为英文文献，上面给了一个CAS号：874942-03-7，但是却查不到这个CAS号；希望各位前辈帮帮忙，看能查到这个物质吗？
由于不能上传图盘，我来描述一下这个物质：中间是一个三硫代碳酸的结构，这个结构上的一个氢被 3-巯丙基三乙氧基硅烷取代，另一个氢被溴化苄取代（即溴化苄和三硫代碳酸结合脱掉一个溴化氢分子），用笔写一下，这个结构式就出来了；（分子式：C17 H28 O3 S3 Si）

问题补充：
3-巯丙基三乙氧基硅烷 CAS号：14814-09-6
溴化苄 CAS号：100-39-0

回复人：claymore,★★★★★ (C-H活化，kumada,suzuki,stille,negishi.cross-coupling.) 时间：2012-04-14 13:45:22 编辑	1楼

回复人：claymore,★★★★★ (C-H活化，kumada,suzuki,stille,negishi.cross-coupling.) 时间：2012-04-14 13:44:34 编辑

2楼

1: Phase Transfer Preparation of S-(3-triethoxysilylpropyl)-S'-benzyl trithiocarbonate
EXAMPLE 1
Phase Transfer Preparation of S-(3-triethoxysilylpropyl)-S'-benzyl trithiocarbonate
In this experiment a 250 ml, three-neck round bottom flask equipped with a pot thermometer, nitrogen inlet, and condenser was charged with 100 ml of saturated sodium chloride brine, 5 grams of solid sodium chloride, 23.8 grams (0.10 mole) of 3-mercaptopropyltriethoxysilane, 7.6 grams (0.10 mole) of carbon disulfide, and 0.2 grams of Aliquat.(R). 336 quaternary ammonium salt (made by the methylation of mixed tri-octyl/decyl amine).
Then, a magnetic stir bar was placed into the flask and the contents were stir vigorously at room temperature (about 22.deg. C. (77.deg. F.)).
While the mixture was being stirred 4.42 grams (~0.11 moles) of solid sodium hydroxide pellets were added to the flask and the mixture turns yellow in color.
After about 15 minutes the temperature had increased to about 40.deg. C. (104.deg. F.).
At that point, 12.6 grams (0.10 moles) of benzyl chloride was added and the temperature increased to about 65.deg. C. (149.deg. F.) and that temperature was maintained for about 20 minutes.
It was noted that the lower aqueous phase became colorless.
The mixture was then rapidly cooled in a water bath and 50 ml of chloroform was added with stirring prior to filtration.
A small amount of gelled material was filtered off (about 3.2 grams).
The two phase filtrate was separated.
The lower chloroform layer was then stripped on a rotovap to give 35.0 grams of yellow oil (the theoretical yield was 40.3 grams).

回复人：qq40727140,▲ (中国化学化工论坛) 时间：2012-04-16 15:26:07 编辑	3楼
还是不明白

回复人：qq40727140,▲ (中国化学化工论坛) 时间：2012-06-28 16:12:09 编辑	4楼
已经打分了！

得分人：claymore :5,

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