3-cyclosulphur-1-heptanol through utilizing sodium bisaluminumhydride so as to obtain 3-sulfhydryl-1-heptanol, wherein the yield is 85%; and step 4, reacting the 3-sulfhydryl-1-heptanol with acetic anhydride so as to obtain the 3-sulfhydryl-1-heptyl acetic ester, wherein the yield is 68...
Alfa Aesar:醋酐,ACS,97+% Acetic anhydride, ACS, 97+%(108-24-7) 刺激数据:皮肤- 兔子 450 毫克/ 24小时 轻度; 眼睛-兔子 0.25 毫克 重度 方法一:有以下几种工艺路线:1.乙酸裂解法(烯酮法) 以丙酮或乙酸为原料,首先热分解生成中间体乙烯酮,然后将含乙烯酮气体在两个串联的填充塔中用乙酸和乙酐的...
Acetaldehyde acetic anhydride method with acetaldehyde acetic anhydride as raw material, the first synthesis of ethylene diacetic acid, and then deacetic reaction, by one step or two step synthesis. spontaneous combustion temperature 801 ° F. toxic substance data information provided by: pubchem...
Vinegar is a naturally-occurring liquid that contains many chemicals, so you can't just write a simpleformulafor it. It is approximately 5-20% acetic acid in water. So, there are actually two main chemical formulas involved. Themolecular formulafor water is H2O. The structural formula for ac...
Identify the functional group in the given compound. A. carboxylic anhydride B. carboxylic ester C. carboxylic acid D. amide What is the bonding functional group for methanol? Identify the functional group or type of molecule in the following: A) CH_3 OH B) CH_3 CHO C) CH_3 COCH_3 ...
production methodglycine acetyl method: put an amino acid and about 4 times the amount of water into the reaction pot, stir until all dissolved. Add 4/5 of the total amount of acetic anhydride at about 20 ℃, stir for 0.5h, and add the remaining 1/5 of acetic anhydride. In terms of...
Acetic anhydride was gradually being titrated into a mixture of chromic anhydride and acetic acid in a 20-gallon, glass-lined tank. After 1 1/2 hours of this procedure, the contents of the reactor exploded.Mixing glacial acetic acid and oleum in a closed container caused the temperature and ...
Acetic acid is used as a raw material for the production of vinyl acetate monomer and acetic anhydride. Used in Pharmaceutical Industry: Acetic acid is used as a solvent in reactions for the synthesis of various pharmaceutical compounds.
The above compound (0.5 mole) is stirred overnight at room temperature in pyridine (200 ml., with acetic anhydride (0.55 mole). The solution is evaporated to dryness at 5° C, dissolved in dichloromethane (600 ml.) and extracted with 2.5 N hydrochloric acid (6 × 200 ml.), water (12...
8. The process of claim 1 wherein the condensing agent in Step (4) is trifluoroacetic anhydride with or without trifluoroacetic acid or a Lewis acid. 9. The process of claim 4 wherein the Lewis acid in Step (1) is AlCl3or SnCl4. ...