专利号:US-12435034-B2 优先权日:2020-10-19 标 题 :Process of preparing 3-fluoro-5(((1R,2AR)-3,3,4,4-tetrafluoro-1,2A-dihydroxy-2,2A,3,4-tetrahydro-1H-cyclopenta[cd]inden-7-yl)-oxy)benzonitrile 发明人:FU JIPING; LOU YAN; HE YIGANG; SHI YUETAO; ZHOU PENG; LI XINGXING 权利人:NIKANG THERAPEUTICS INC 摘要:Disclosed herein are processes for preparing certain intermediates useful in the synthesis of 3-fluoro-5-(((1S,2aR)-1,3,3,4,4-pentafluoro-2a-hydroxy-2,2a,3,4-tetrahydro-1H-cyclopenta[cd]inden-7-yl)oxy)benzonitrile or a pharmaceutically acceptable salt thereof.
参考标题:Relay Catalysis: Enantioselective Synthesis Of Cyclic Benzo-Fused Homoallylic Alcohols By Chiral Brønsted Acid-Catalyzed Allylboration/ring Closing Metathesis 作者:Santos Fustero,Elsa Rodríguez,Rubén Lázaro,Lidia Herrera,Silvia Catalán,Pablo Barrio |发布日期:2013.4.15 摘要:Six‐ And Seven‐membered Benzo‐fused Cyclic Homoallylic Alcohols Can Be Readily Synthesized By A Tandem Chiral Brønsted Acid‐catalyzed Allyl (Crotyl)Boration/ring Closing Metathesis Sequence Performed Under Orthogonal Relay Catalysis Conditions. Excellent Enantio‐ And Diastereoselectivities Are Obtained In Most Of The Cases. In Addition, The Parent Crotylboration/rcm Process Is Also Described. The Required