Eri Ogino   Satoru Kuwano   Takayoshi Arai   
Advanced Synthesis and Catalysis 2022年
Chiral C2-symmetric 3,3′-bisaminomethyl-binaphthol (AMB) is an organocatalyst for the asymmetric epoxidation of trisubstituted acrylonitriles. Using cumene hydroperoxide (CHP) as an oxidant, 3,3′-bis((R,R)-2-phenylethylaminomethyl)-(R)-binaphthol ...
A chiral quinine-derived organic base catalyst with halogen bond donor functionality was used to catalyze the asymmetric double Mannich reaction of malononitrile with N-Boc and N-Cbz imines to afford 1,3-diamines in excellent yields with high enan...
A stable, hypervalent cyclic dibenzoiodolium salt acted as a strong halogen bonding (XB)-donor catalyst for [4+2] cycloaddition of 2-alkenylindoles, and not as an oxidizing agent. The cross-[4+2] cycloaddition of 2-vinylindoles with 2-alkenylindol...
Eri Ogino   Ayu Nakamura   Satoru Kuwano   Takayoshi Arai   
Organic Letters 2021年3月
Chiral C2-symmetric 3,3'-bis((R,R)-2-naphthylethylaminomethyl)-(R)-binaphthol (AMB4) functions as an efficient organocatalyst for the asymmetric epoxidation of various alkylidenemalononitriles. The spiro-epoxyoxindole products obtained from isatil...