CAS: 6053-46-9; Tetrahydro-1H-5,9-Methanopyrano[3,4-D]Oxepine-1,3,6,8(4H)-Tetraone

上下游产品

2,3,5-三羧基环戊烷乙酸 2,3,5-Tricarboxycyclopentylacetic Acid 24434-90-0

2,3,5-三羧基环戊烷乙酸置于乙酸酐体系中,用 四氢呋喃 作为反应溶剂,化学反应 2.0H,以83%的收率获得产物1-羧甲基-2,3,5-环戊烷三羧酸-2,6:3,5-二酐
参考文献:一种3-羧甲基-1,2,4-环戊烷三羧酸-1,4:2,3-二酐的制备方法
标题:一种3-羧甲基-1,2,4-环戊烷三羧酸-1,4:2,3-二酐的制备方法
摘要:本发明公开了一种3‑羧甲基‑1,2,4‑环戊烷三羧酸‑1,4:2,3‑二酐的制备方法,本发明属于精细化学品制备方法领域.其主要技术方案是以二聚环戊二烯为起始原料,经过臭氧,双氧水依次氧化反应得到中间产物2,3,5‑三羧酸环戊烷乙酸,最后用乙酸酐做脱水剂,脱水闭环合成目标产物3‑羧甲基‑1,2,4‑环戊烷三羧酸‑1,4:2,3‑二酐.本方案具有反应条件温和,操作安全,产品纯度高,收率高,无污染等优点,适合大规模工业化生产.

专利信息

专利号:WO-2022269335-A1
优先权日:2021-06-23
标题 :A process for preparation of alicyclic acid dianhydride
发明人：RAO CHIKKAM SRINIVASA; VARMA SATISH RAMSHANKAR
权利人:VIVAN LIFE SCIENCES PVT LTD
摘要:The present invention depicts a method for synthesis of alicyclic acid dianhydride in simpler and economic manner. The process has advantages of an economical production method without using a catalyst, safe operation, high yield and most importantly purification under mild reaction conditions and high purity of product and the method is suitable in large scale industry.