专利号:US-4149010-A 优先权日:1977-06-30 标 题 :Synthesis of α-trifluoromethyl vinyl acetate 发明人:LINDHOLM EDWARD P 权利人:POLAROID CORP 摘要:1,1,1-Trifluoroacetone is acetylated when an excess of an acetylating agent is allowed to react with this ketone in the presence of an excess of an amine such as pyridine.
参考标题:Development Of A Scalable, Chromatography-Free Synthesis Of T-Bu-Sms-Phos And Application To The Synthesis Of An Important Chiral Cf3-Alcohol Derivative With High Enantioselectivity Using Rh-Catalyzed Asymmetric Hydrogenation 作者:Joshua D. Sieber,Sonia Rodriguez,Rogelio Frutos,Frederic Buono,Yongda Zhang,Ning Li,Bo Qu,Ajith Premasiri,Zhibin Li,Zhengxu S. Han,Yibo Xu,Denis Byrne,Nizar Haddad,Jon Lorenz,Nelu Grinberg,Dmitry Kurouski,Heewon Lee,Bikshandarkoil Narayanan,Laurence Nummy,Jason Mulder,Jack D. Brown,Alice Granger,Joe Gao,Mariusz Krawiec,Zeena Williams,Scott Pennino,Jinhua J. Song,Azad Hossain,Nathan K. Yee,Carl Busacca,Frank Roschangar,Yanchao Xin,Zhantong Mao,Xinzhu Zhang,Yaping Hong,Chris H. Senanayake |发布日期:2018.2.2 摘要:A Chromatography-Free, Asymmetric Synthesis Of The C2-Symmetric P-Chiral Diphosphine T-Bu-Sms-Phos Was Developed Using A Chiral Auxiliary-Based Approach In Five Steps From The Chiral Auxiliary In 36% Overall Yield. Separtion And Recovery Of The Auxiliary Were Achieved With Good Yield (97%) To Enable Recycling Of The Chiral Auxiliary. An Air-Stable Crystalline Form Of The Final Ligand Was Identified