Aminooxazolinate; a chiral amidinate analogue.
نویسندگان
چکیده
High levels of diastereoselection with respect to chirality-at-metal are achieved at equilibrium for complexes containing a new and available range of diazaallyl ligands.
منابع مشابه
Constrained geometry aminooxazolinate ligands giving chiral zirconium guanidinates; catalytic cyclohydroamination.
DFT calculations indicate that contrary to a prior report, N-heterocycle-augmented constrained geometry ligands e.g. Cp'-SiMe(2)-NR (Cp' = Me(4)C(5), R = 2-pyridine) should be capable of binding both atoms of the diazaallyl fragment at zirconium. This was confirmed by a molecular structure of a previously reported complex. Similar R = 2-oxazoline complexes were also shown to be feasible, althou...
متن کاملChiral lutetium benzamidinate complexes.
Enantiomerically pure lutetium complexes were synthesized as the first rare earth metal complexes containing a chiral amidinate ligand. The catalytic activity and the enantioselectivity in hydroamination reactions were studied.
متن کاملThe synthesis of a sterically hindered samarium(II) bis(amidinate) and conversion to its homoleptic trivalent congener.
The first divalent samarium bis(amidinate) has been prepared and aspects of its novel chemistry, including the preparation of a sterically hindered homoleptic Sm(III) tris(amidinate), explored.
متن کاملHalf-sandwich bis(propiolamidinate) rare-earth metal complexes: synthesis, structure and dissociation of the cyclopentadienyl ligand via competition with an amidinate.
A comparative study on the stabilizing ability between C5Me4(SiMe3) (Cp' for short) and amidinate in rare-earth metal complexes is investigated. Cp' is found to dissociate from half-sandwich bis(propiolamidinate) lanthanides via competition with a propiolamidinate, which clearly shows that the coordinative ability of chelate amidinate is stronger than that of η(5)-Cp' under the present conditions.
متن کاملMono- and bis-amidinate 2,6-xylylimido vanadium chlorides: synthesis, structure, and reactivity.
Salt metathesis of (2,6-xylylimido) vanadium trichloride (1) with the unsolvated or the TMEDA lithium p-Et benzamidinate complexes (2 and 3, respectively, in 1 : 2 V : Li molar ratio) yields bis[N,N'-bis(trimethylsilyl) p-Et benzamidinate](2,6-xylylimido)VCl (4) as dark brown, diamond-shaped crystals. When equimolar amounts of complexes 1 and 2 are reacted, a mixture of the bis (4) and mono (5)...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chemical communications
دوره 22 شماره
صفحات -
تاریخ انتشار 2004