92646-33-8Relevant articles and documents
Bisoxazoline and bioxazoline chiral ligands bearing 4-diphenylmethyl shielding substituents. Diels-Alder reaction of cyclopentadiene with 3-acryloyl-2-oxazolidinone catalyzed by the aqua nickel(II) complex
Kanemasa,Adachi,Yamamoto,Wada
, p. 681 - 687 (2007/10/03)
Enantiopure 2-amino-3,3-diphenyl-1-propanol was synthesized by the hidantoin route starting from diphenyl-acetaldehyde followed by subsequent functional group transformations and optical resolution by a chiral HPLC. The amino alcohol can be converted into two new chiral ligands: 4,4'-bis(diphenylmethyl)-2,2'-bioxazoline and 2,2'-isopropylidenebis(4-diphenylmethyloxazoline), and further to complexes with copper(II) trifluoromethanesulfonate and nickel(II) perchlorate hexahydrate. The nickel(II) aqua complex obtained from the bisoxazoline effectively catalyzed the Diels-Alder reactions of cyclopentadiene with 3-acryloyl-2-oxazolidinone in high endo-selectivities and moderate enantioselectivities via a square planar transition structure.
2/3-(heterocyclic alkyl amino)-1-(subst.-phenyl-methoxy)-ethanes/propanes as tachykinin-receptor antagonists
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, (2008/06/13)
Compounds of formula (I), and salts and prodrugs thereof, wherein Q represents phenyl or benzhydryl; X and Y each represent H or X and Y together form a group =0; Z is O, S or NR 8 (R 8 is H or C 1-6 alkyl); R 1 is H, optionally substituted C 1-6 alkyl, p