- Full text PDF available (0)
- This year (0)
- Last 5 years (1)
- Last 10 years (3)
Abstract Homochiral ( E )- and ( Z )-enamides derived from SuperQuat ( S )-4-phenyl-5,5-dimethyl-oxazolidin-2-one undergo highly diastereoselective epoxidation upon treatment with dimethyldioxirane.… (More)
Tetraphenylarsonium diisothiocyanatodichlorocobaltate(II) was synthesized by metathetic pathway. It crystallizes in the monoclinic space group C 2/c with unit cell parameters, a = 13.510(4) Å, b =… (More)
Starting from (η5-carboxycyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt, (η5-(S)-2-(4-tert-butyl)oxazolinylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt and… (More)
Treatment of a range of N-benzyl tertiary amines with aqueous ceric ammonium nitrate results in N-debenzylation to afford the corresponding secondary amine. Chemoselective mono-N-debenzylation of… (More)
Treatment of tertiary amines containing one or more N-benzyl protecting groups with aqueous ceric ammonium nitrate results in clean N-debenzylation to afford the corresponding secondary amine.
The central six-membered ring of the anthrone in 10-bnzylidene-9(10H)-anthracenone assumes a boat conformation because of close interactions with the benzylidene moiety. Other manifestations of the… (More)
C 28 H 24 cristallise dans Pbca avec a=6,694, b=17,498, c=34,959 A, Z=8; T=193 K; affinement jusqu'a R=0,0402. Le compose possede un miroir plan moleculaire approximatif perpendiculaire aux cycles… (More)
Alternatively, the chiral auxiliary promotes aldol reactions to give syn-aldol products such as (XIII), (XVI), or (XX) with good diastereocontrol over both newly generated stereogenic centers.
The spin-crossover phenomenon between the low- spin (S=1/2, 2T2) and high-spin (S=5/2, 6A1) states depending on temperature is examined for two complexes of the composition [Fe(3-CH3OSPH)2]Y, where… (More)