Huang, Ke-Xin published the artcileAsymmetric Synthesis of 3-Amine-tetrahydrothiophenes with a Quaternary Stereocenter via Nickel(II)/Trisoxazoline-Catalyzed Sulfa-Michael/Aldol Cascade Reaction: Divergent Access to Chiral Thionucleosides, Category: benzoxazole, the publication is Organic Letters (2021), 23(1), 81-86, database is CAplus and MEDLINE.
A generally useful Ni(II)/trisoxazoline-catalyzed asym. sulfa-Michael/Aldol cascade reaction is introduced to access chiral 3-amine-tetrahydrothiophene derivatives containing a quaternary stereocenter (32 examples, up to 93% yield, > 20:1 dr and 92% ee). Moreover, the novel strategy offers an efficient and convenient approach to construct chiral thionucleoside analogs.
Organic Letters published new progress about 1239015-11-2. 1239015-11-2 belongs to benzoxazole, auxiliary class TOX Ligands, name is (3aS,3a’S,3a”S,8aR,8a’R,8a”R)-2,2′,2″-(Propane-1,2,2-triyl)tris(8,8a-dihydro-3aH-indeno[1,2-d]oxazole), and the molecular formula is C33H29N3O3, Category: benzoxazole.
Referemce:
https://en.wikipedia.org/wiki/Benzoxazole,
Benzoxazole | C7H5NO – PubChem