SDS of cas: 99-61-6. In 2021.0 CATAL LETT published article about CHIRAL STATIONARY PHASES; LIVING POLYMERIZATION; SUPRAMOLECULAR CHIRALITY; ORGANOCATALYST; PENDANTS; POLY(QUINOXALINE-2,3-DIYL)S; COMPLEXES; WATER in [Li, Chonglong; Wang, Jihai; Ding, Huiyun] North Minzu Univ, Coll Chem & Chem Engn, Yinchuan, Ningxia, Peoples R China; [Li, Chonglong] North Minzu Univ, State Ethn Affairs Commiss, Key Lab Chem Engn & Technol, Yinchuan 750021, Ningxia, Peoples R China in 2021.0, Cited 32.0. The Name is 3-Nitrobenzaldehyde. Through research, I have a further understanding and discovery of 99-61-6.
A novel helical poly(phenyl isocyanide) bearing Boc protectedl-proline pendants (poly-1(m)) was designed and synthesized. Removed the protecting Boc groups on thel-proline pendants led to the formation of helical polymer poly-2(m), which showed high optical activity owing to the preferred right-handed helix of polyisocyanide main chain. Optically active helical poly-2(m)showed excellent catalytic ability on asymmetric aldol reaction. Helical polymer catalysts exhibited enhanced stereoselectivity in aldol reaction compared to small moleculel-proline. Under the optimized aldol reaction condition, the enantiomeric excess (ee) and diastereomeric ratio (dr) values of the aldol reaction product were respectively up to 90% and > 20/1. Moreover, the helical polyisocyanide catalyst Poly-2(m)can be easily recovered and reused in the aldol reaction for at least five cycles with maintained its activity and stereoselectivity. Graphic Abstract Enantioselective aldol reaction catalyzed by poly-2(m). [GRAPHICS]
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Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem