摘要
利用双环戊二烯（ＤＣＰＤ）加热分解制得环戊二烯（ＣＰＤ），在四氢呋喃中ＣＰＤ与Ｎａ反应得到ＣＰＤＮａ，再与干冰混合、加水溶解、中和、过滤、干燥，即得双环戊二烯二甲酸。考察了ＣＰＤＮａ与干冰混合后放置时间对收率和产物纯度的影响。当混合后放置３０ｈ时，收率大于８０％，纯度大于９９％。并用１Ｈ─ＮＭＲ，ＭＳ测定了该酸的分子结构及两个羧基的位置。
Dimeric cyclpentadiene carboxylic acid[DCPD(COOH)2]was synthesized by mixing cyclopentadienyl sodium and dry ice,followed by dissolving the mixture and neutralizing with HCl.The effects of different conditions on the yield and the purity of the product were studied.The yeild was more then 80% and the purity was more than 99% after mixing for 30 h.The melt point and solubility of DCPD (COOH)2 were inspected and its structure was determined by 1H-NMR and MS methods.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1996年第3期159-161,共3页
China Synthetic Rubber Industry
关键词
双环戊二烯
二甲酸
合成
物理性质
分子结构
dicyclopentadiene
metallic sodium
dimeric cyclopentadiene carboxylic acid
synthesis
physical property
molecular structure
