United kingdom manufacturer of organic intermediates . specialties include amination , bromination , cyanation , epichlorohydrin , friedel - crafts and thionyl chloride chemicals -生產(chǎn)醋酸乙酯和醋酸丁酯等有機(jī)溶劑,產(chǎn)品用于醫(yī)藥香料染料涂料油墨等。
Jintan star chemical co . , ltd . is a professional fine chemical production enterprise which has rich experience in diazo reaction , friedel - crafts and reducing reaction 我公司是一家專業(yè)化、科研型化工生產(chǎn)企業(yè),在重氮化反應(yīng)、傅克反應(yīng)、還原反應(yīng)、縮合反應(yīng)、霍夫曼反應(yīng)等方面有豐富的經(jīng)驗(yàn)。熱忱歡迎您的光臨指導(dǎo)!
Abstract : cetirizine hydrochloride was synthesized from chlorobenzene and benzoyl chloride by the friedel - crafts reaction , reduction , and chlorination followed by condensation with piperizine , 2 - chloroethanol and sodium chloroacetate in turn in 28 . 2 % overall yield based on chlorobenzene 文摘:以氯苯和苯甲酰氯為起始原料,經(jīng)付克反應(yīng)、還原、氯化,再分別與哌嗪、氯乙醇、氯乙酸鈉縮合,成鹽制得鹽酸西替利嗪,總收率為28 . 2 %