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Stereoselective amination of allylic and homoallylic alcohols via intramolecular amidomercuration : applications to the synthesis of amino acids
(1987)
Stereoselective amination of allylic and homoallylic alcohols was applied to the synthesis of nonproteinogenic hydroxy amino acids. The total synthesis of (±)-threo-γ-hydroxy-β-lysine (1) was completed in 10 steps from ...
A study of cyclic dialkylamides and an alkyl halide as mechanistic probes in potential electron transfer reactions
(1986)
The elucidation of electron transfer as a pathway in organic reactions is usually difficult. The products from such a mechanistic pathway may be the same as those resulting from a beta hydride transfer or from simple ...
Reaction mechanism of the buffer-catalyzed and substituted [beta]-cyclodextrin-catalyzed hydrolysis of catechol cyclic phosphates
(1987)
The mechanism for the imidazole-catalyzed hydrolysis of catechol cyclic phosphate has been investigated. The Bronsted β-value obtained for the buffer-catalyzed hydrolyses at a 1:1 buffer ratio was 0.41. The Hammett φ-value ...
Properties, reactivity, and mechanistic aspects of anionic transition metal carbonyl hydrides
(1987)
In order to examine the effects of phosphorus donor substitution in HFe(CO)₄⁻, a series of compounds of the form cation⁺ HFe(CO)₃P⁻ (P = P(OPh)₃, P(OMe)₃, P(OEt)₃, PPh₃, PPh₂Me, PMe₃, PEt₃) have been prepared. The phosphorus ...
The total synthesis of (±) jaconecic acid
(1987)
Jaconecic acid (6) is a cyclic diacid produced when the pyrrolizidine alkaloid jacobine (5) is subjected to base hydrolysis. The first total synthesis of jaconecic acid was accomplished in 8 steps in an overall yield of ...
The development and application of multiconfigurational self-consistent field states to study the electronic structure of atoms and molecules
(1986)
We develop and review complete second-order Newton-Raphson type multiconfigurational self-consistent field (MCSCF) iterative procedures based on unitary exponential operators. We discuss characteristics that an MCSCF ...
Synthesis and evaluation of the biological activity of analogues of pepstatin
(1980)
Synthesis of all four stereoisomers of the novel amino acid statine, 4-amino-3-hydroxy-6-methylhepatanoic acid, and alastatine, 4-amino-3-hydroxypentanoic acid has been accomplished. Several tripeptide analogues of pepstatin ...
Oxygen complexes : reduction kinetics and other model studies
(1985)
An investigation of the relationship between the reduction potentials of ferrous chelates and the rate of reduction of oxygen adducts of cobaltous-polyamines is reported. Potentiometric equilibrium studies of 1:1 molar ...
Development and utilization of laser-ion beam photodissociation
(1985)
Laser induced photodissociation of fast (3-8 keV) ion beams has been developed for use in both a coaxial and perpendicular beam arrangement. The laser-ion beam photodissociation technique has been used as a probe for ...
Molecular and electronic structures of some chiral complexes of dimolybdenum (II)
(1985)
The complexes β-Mo2X4(PP)2; X = Cl, Br; PP = S,S-dppb, dppe, dedp have been synthesized starting from Mo2(O2CCF3)4 by using Me3SiX; X = Cl, Br, as reagents. A synthetic route has been found which yields mixed ligand complexes ...