We have done a theoretical study of the $\gamma d \to \pi^0 \eta d$ reaction starting with realistic model for N N$ that reproduces cross sections and polarization observables at low energies involves \Delta(1700)\to \Delta(1232) process. For coherent in deuteron we considered impulse approximation together rescattering pions $\eta$ on different nucleon than one where they are produced. found t...

N-Vinylpirrolidinone reacts with (E)-ethyl 5-hydroxy-3-(4-oxo-4H-chromen-3-yl) acrylate (1) through a domino reaction similar to that reported reaction for ethyl vinyl ether. Inverse electron demand Diels–Alder (IEDDA)–elimination-IEDDA generates isomeric tetracycles 5 and 6. The assignment of the relative stereochemistry of the products was made by comparing the proton couplings with those obt...

We calculate the one-loop induced couplings of two gaugino–like neutralinos to the Z and Higgs bosons in the Minimal Supersymmetric Standard Model. These couplings, which vanish at the tree level, can be generated through loops involving fermions and sfermions. We show that, while the neutralino contribution to the invisible Z boson decay width remains small, the loop induced couplings to the l...

The production of top quark pairs together with a hard gluon in e + e − annihilation is studied including next-to-leading order corrections in the strong coupling. 1 Motivation The production of top quark pairs in association with (at least) one additional parton X carrying a hard momentum k X , e + (p +) + e − (p −) → t(k t) + ¯ t(k¯ t) + X(k X), (1) is interesting for several reasons: A compa...

The sensitivity to the Z ′ couplings of the processes ee → ll, b̄b and c̄c at the linear collider with √ s = 500GeV with initial beam polarization, for typical extended model examples are studied. To this aim, the suitable integrated, polarized, observables directly related to the helicity cross sections that carry information on the individual Z ′ chiral couplings to fermions are used. We discus...

New chemotypes are obtained from tryptophan-containing diketopiperazines through selective C-C or C-N intramolecular oxidative couplings. The choice of the oxidant source dictates the outcome of the reaction.

The Staudinger ligation provides a means to form an amide bond between a phosphinothioester and azide. This reaction holds promise for the ligation of peptides en route to the total chemical synthesis of proteins. (Diphenylphosphino)methanethiol is the most efficacious of known reagents for mediating the Staudinger ligation of peptides, providing high (> 90%) isolated yields for equimolar coupl...

Cp*Rh(III)-catalyzed intermolecular C-C couplings between activated α-diazocarbonyl compounds and arenes bearing a range of azacyclic directing groups have been achieved. This catalytic alkylation reaction operates under mild conditions with good functional group tolerance.

Site-selective dihalogenated heteroarene cross-coupling with organometallic reagents usually occurs at the halogen proximal to heteroatom, enabled by intrinsic relative electrophilicity, particularly in strongly polarized systems. An archetypical example is Suzuki–Miyaura (SMCC) of 2,4-dibromopyridine organoboron species, which typically exhibit C2-arylation site-selectivity using mononuclear P...

A new technique for open quantum dynamics, combining reaction coordinate mappings and the polaron transform, allows efficient description of strong system-bath couplings, opening way novel applications in nanoscale transport thermodynamics.