111047-52-0Relevant articles and documents
Highly enantioselective aza-henry reaction of ketimines catalyzed by a chiral bifunctional thiourea-tertiary amine derived from quinine
Fang, Yanhong,Lu, Ning,Wei, Zhonglin,Cao, Jungang,Liang, Dapeng,Lin, Yingjie,Duan, Haifeng
, p. 4371 - 4375 (2018)
We have developed a highly enantioselective aza-Henry reaction of aryl α-ketoester-derived N-Ts ketimines with a wide range of substrate scope by a simpler bifunctional thiourea-tertiary amine catalyst derived from quinine. A variety of ketimines were investigated and corresponding products were obtained in excellent yields (up to 99% yield) with excellent enatioselectivities (up to 99% ee).
Organocatalyzed formal [2 + 2] cycloaddition of ketimines with allenoates: Facile access to azetidines with a chiral tetrasubstituted carbon stereogenic center
Takizawa, Shinobu,Arteaga, Fernando Arteaga,Yoshida, Yasushi,Suzuki, Michitaka,Sasai, Hiroaki
supporting information, p. 4142 - 4145 (2013/09/12)
An enantioselective organocatalyzed aza-MBH-type reaction of ketimines and allenoates has been developed. The present formal [2 + 2] cycloaddition produces highly functionalized azetidines with a chiral tetrasubstituted carbon stereogenic center in good to excellent yields and high enantioselectivities.