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四溴化碳

产品号 L00821 公司名称 Alfa Aesar
CAS号 558-13-4 公司网站 http://www.alfa.com
分子式 CBr4 电 话
分子量 331.6267 传 真
纯 度 98% (dry wt.), may cont. up to ca 6% water 电子邮件
保 存 Chembase数据库ID: 90364

产品价格信息

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产品别名

标题
Carbon tetrabromide
IUPAC标准名
tetrabromomethane
IUPAC传统名
carbon tetrabromide
别名
Tetrabromomethane

产品登记号

Beilstein号 1732799
CAS号 558-13-4
MDL号 MFCD00000117
EC号 209-189-6

产品性质

纯度 98% (dry wt.), may cont. up to ca 6% water
沸点 190°C
密度 3.420
熔点 90-95°C
GHS危险品标识 GHS05
GHS危险品标识 GHS07
GHS危险声明 H318-H315-H302-H335
欧盟危险性物质标志 X
GHS警示性声明 P261-P305+P351+P338-P302+P352-P321-P405-P501A
危险公开号 22-37/38-41
RTECS编号 FG4725000
安全公开号 26-36/37/39-60
TSCA收录
联合国危险货物等级 6.1
联合国危险货物编号 UN2516
联合国危险货物包装类别(PG) III

产品详细信息

参考文献

  • Brominating agent for Li ester enolates, where bromine tends to give erratic results: J. Org. Chem., 43, 3687 (1978). Exchange reaction with n-BuLi or PhLi in ether at -111o generates tribromomethyllithium, giving 91% yield on carbonation: Chem. Ber., 101, 3230 (1968).
  • In combination with triphenylphosphine, effects the dibromomethylenation of aldehydes to 1,1-dibromoalkenes: J. Am. Chem. Soc., 84, 1745 (1962). Dehydrobromination of the products with n-BuLi provides a valuable aldehyde to alkyne homologation: Tetrahedron Lett., 3769 (1972); 31, 3141 (1990). An improved procedure, suitable for sensitive aldehydes, has been described using triethylamine in the dibromomethylenation step to suppress side reactions, and the hindered base sodium bis(trimethylsilylamide) (NaHMDS) for the elimination step: Tetrahedron Lett., 35, 3529 (1994); Synth. Commun., 25, 3641 (1995):
  • Also frequently used in combination with triphenylphosphine for the conversion of alcohols to alkyl bromides under mild conditions, applicable to sensitive substrates such as allylic or carbohydrate molecules: Chem. Ind. (London), 1017 (1969); J. Org. Chem., 36, 403 (1971); Synth. Commun., 24, 1117 (1994).