Development of an S<sub>N</sub>Ar Reaction: A Practical and Scalable Strategy To Sequester and Remove HF
作者:A. John Blacker、Gabriel Moran-Malagon、Lyn Powell、William Reynolds、Rebecca Stones、Michael R. Chapman
DOI:10.1021/acs.oprd.8b00090
日期:2018.9.21
simple and operationally practical method to sequester and remove fluoride generated through the SNAr reaction between amines and aryl fluorides is reported. Calcium propionate acts as an inexpensive and environmentally benign in situ scrubber of the hydrofluoricacid byproduct, which is simply precipitated and filtered from the reaction mixture during standard aqueous workup. The method has been tested
报道了一种简单且操作上可行的方法,用于隔离和去除通过胺与芳基氟化物之间的S N Ar反应生成的氟化物。丙酸钙可作为氢氟酸副产物的廉价且对环境无害的原地洗涤器,在标准的水后处理过程中,氢氟酸副产物可以简单地从反应混合物中沉淀出来并过滤掉。该方法已在10到100 g的操作规模上进行了测试,显示在每种情况下氟化物含量均降低> 99.5%。两种规模的氟化钙都得到了全面的回收,这证明这是一种通用,有效且健壮的氟化物提取方法,有助于防止搪玻璃反应堆腐蚀。
New and Convergent Synthesis of AZD 4547
作者:Han Wang、Yongjun Mao、Lehao Bu、Wenxin Chen、Lei Gao、Cong Sun
DOI:10.3987/com-20-14215
日期:——
A practical and convergent synthetic route of AZD 4547 was developed successfully. The intermediate 5-(3,5-dimethoxyphenylethyl)-1H-pyrazol-3-amine (7) was prepared from 3,5-dimethoxybenzaldehyde through 6 simple steps in 52.3% yield. Another intermediate 4-((3S,5R)-3,5-dimethylpiperazin-1-yl)benzoic acid (14) was synthesized from ethyl 4-fluorobenzoate and (2R,6S)-2,6-dimethylpiperazine in 62% yield over 2 steps. Finally, AZD 4547 was obtained from 7 and 14 in 73% yield and 99.1% purity. Purification methods of the intermediates and the final product involved in the route were developed.
ACYLAMINOPYRAZOLES AS FGFR INHIBITORS
申请人:AstraZeneca AB
公开号:EP2125748A2
公开(公告)日:2009-12-02
[EN] NOVEL COMPOUNDS<br/>[FR] NOUVEAUX COMPOSÉS
申请人:ASTRAZENECA AB
公开号:WO2008075068A2
公开(公告)日:2008-06-26
[EN] There is provided a compound of formula (I); or a pharmaceutically acceptable salt thereof. There are also provided processes for the manufacture of a compound of Formula 1, and the use of a compound of Formula 1 as a medicament and in the treatment of cancer. [FR] L'invention porte sur un composé représenté par la Formule (I) : ou un sel pharmaceutiquement de celui-ci. L'invention porte également sur des procédés pour la fabrication d'un composé représenté par la Formule 1, et sur l'utilisation d'un composé représenté par la Formule 1 en tant que médicament et dans le traitement du cancer.