Kazutaka Sanada   Aoi Washio   Hiroki Ishikawa   Yasushi Yoshida   Takashi Mino   Masami Sakamoto   
Angewandte Chemie - International Edition 61(19) 2022年5月
We developed a chiral symmetry breaking method for monoacylated meso diols. The X-ray crystal structure analysis of monoacylated 1,4-anhydroerythritols, meso cyclic diols with a cis configuration, revealed that the O-(p-anisoyl) derivative crystal...
Kazutaka Sanada   Aoi Washio   Hiroki Ishikawa   Yasushi Yoshida   Takashi Mino   Masami Sakamoto   
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 2022年3月
We developed a chiral symmetry breaking method for monoacylated meso diols. The X-ray crystal structure analysis of monoacylated 1,4-anhydroerythritols, meso cyclic diols with a cis configuration, revealed that the O-(p-anisoyl) derivative crystal...
Takumi Nakamura   Hiroki Ishikawa   Kazuma Ban   Yasushi Yoshida   Takashi Mino   Yoshio Kasashima   Masami Sakamoto   
CHEMPLUSCHEM 87(1) 2022年1月
Atroposelective resolution for axially chiral nicotinamides was achieved by dynamic chiral salt formation with L-DBTA using six types of nicotinamides that could not be optically resolved by the preferential crystallization method. Kinetic studies...
Takumi Nakamura   Hiroki Ishikawa   Kazuma Ban   Yasushi Yoshida   Takashi Mino   Yoshio Kasashima   Masami Sakamoto   
ChemPlusChem 87(1) 2022年1月
Atroposelective resolution for axially chiral nicotinamides was achieved by dynamic chiral salt formation with L-DBTA using six types of nicotinamides that could not be optically resolved by the preferential crystallization method. Kinetic studies...
Carbonization process of pyromellitic dianhydride (PMDA)-4,4'-diaminodiphenyl ether (ODA)-type polyimide has been studied for decades. However, various reaction mechanisms have been proposed and the detailed mechanisms are still controversial. It ...