问题：CAS号为：927-73-1的性质及其合成方法！
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提问：fengyu211
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时间：2005-04-26 15:05:37 编辑加入/取消收藏订制/取消短消息举报该贴

化合物结构式：
Cl-CH2-CH2-CH=CH2
CAS：927-73-1
哪位仁兄知道它的理化性质和它的合成方法？
谢谢拉！
我的邮箱是：fengyu2242003@yahoo.com.cn

回复人：ykymq,▲ (在校学生) 时间：2005-04-26 22:09:16 编辑

1楼

4-Chloro-1-butene is commercially available from Chemical Samples Company. The checkers employed this material without further purification. The submitters used material prepared from 3-buten-1-ol by a modified procedure of Roberts and Mazur.2 Since material prepared according to the literature is invariably contaminated with thionyl chloride, which will interfere with formation of the Grignard reagent, the following modification is recommended. A two-necked, 200-ml., round-bottomed flask is equipped with a magnetic stirring bar, a 60-ml., pressure-equalizing dropping funnel, and a reflux condenser fitted with a calcium chloride drying tube. The flask is charged with 49.8 g. (0.691 mole) of 3-buten-1-ol and 1.57 ml. of anhydrous pyridine (distilled from calcium hydride). With stirring and external cooling (ice water bath), 82 g. (49 ml., 0.69 mole) of thionyl chloride (Matheson, Coleman and Bell commercial grade was used without further purification) is added dropwise over 3.5 hours. On completion of the addition, the mixture is heated under reflux for one hour. The external heating is then momentarily discontinued, and the condenser and dropping funnel are replaced by a stopper and short-path distilling head with receiver. Distillation of the mixture gives an opaque, colorless liquid (b.p. 68°). The crude product is washed with two 20-ml. portions of saturated aqueous sodium hydrogen carbonate solution (frothing) and 20 ml. of saturated brine, then dried over magnesium sulfate and filtered. The filtrate is distilled, giving 43.4 g. (67–69%) of 4-chloro-1-butene as a colorless liquid, b.p. 68–70°

回复人：plc,▲ (111111111) 时间：2005-04-27 16:58:15 编辑

2楼

4-Chloro-1-butene：

CAS Registry Number: 927-73-1
ClCH 2 CH 2 CHdouble bondCH 2
Molecular Formula: C 4 H 7 Cl
Molecular Weight: 90.552
Accurate Mass: 90.023627
Percentage Composition: C 53.06%; H 7.79%; Cl 39.15%
Boiling Point: Bp 773 75degrees

References:

Juvala, A. , Ber. , 1930, 63 , 1993, (synth)
Simeral, L. et al. , J. Phys. Chem. , 1973, 77 , 1590, (cmr)
Sax, N.I. , Dangerous Properties of Industrial Materials, 5th edn., Van Nostrand Reinhold , 1979, 446

回复人：ykymq,▲ (在校学生) 时间：2005-04-28 19:32:38 编辑	3楼
CAS号为：927-73-1的性质及其合成方法我回答了，怎么没给加分啊

回复人：admin,★ (论坛管理员-欢迎大家访问化学化工论坛) 时间：2005-05-18 18:28:15 编辑	4楼
接受答案了。

回复人：yingnan33,▲ (小药) 时间：2005-05-18 19:47:59 编辑	5楼
加分加的好

得分人：plc-1,ykymq-2,

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