CAS: 18240-93-2; 1,1-Diethylguanidine

上下游产品

CYANAMID diethyl amine hydr°Chloride Diethylcyanamide N,N-diethylurea 30H29N7C30H29N7 29H26FN7C29H26FN7 29H26ClN7C29H26ClN7

N-氰基二乙基胺置于ammonium Hydroxide,Ammonium Chloride体系中,化学反应生成二乙基胍硫酸盐
参考文献:Schotte; Priewe; Roescheisen,Hoppe-Seyler'S Zeitschrift Fur Physiologische Chemie,1928,Vol. 174,P. 143
标题:Schotte; Priewe; Roescheisen,Hoppe-Seyler'S Zeitschrift Fur Physiologische Chemie,1928,Vol. 174,P. 143

专利信息

专利号:US-10843990-B2
优先权日:2018-02-09
标题 :Processes for preparing calix[4]arenes from calix[8]arenes
发明人：HAASE CORNELIUS; HISCOCK JEFF; ATWOOD PHILIP DAVID
权利人:SI GROUP INC
摘要:This invention relates to a one-pot synthesis of a high-purity calix[4]arene compound by reacting a phenolic compound and an aldehyde in the presence of at least one nitrogen-containing base as a catalyst to form the calix[8]arene compound, and cleaving the calix[8]arene compound into a high-purity calix[4]arene compound, directly, without carrying out a purification step before the cleaving step. The invention also relates to an improved conversion of a calix[8]arene compound to a calix[4]arene compound, by cleaving a calix[8]arene compound in a glycol ether solvent having a boiling point of at least about 200° C., to result in a high-purity calix[4]arene compound, without using an antisolvent.