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Vor 5 Tagen · C–C bond-forming enzymes could provide complementary approaches to rapidly assemble functional group-rich carbon backbones under mild conditions without the need for protecting-group chemistry 4 ...
Vor einem Tag · Capturing and separating the greenhouse gas SF6 from nitrogen N2 have significant greenhouse mitigation potential and economic benefits. We used a pore engineering strategy to manipulate the pore environment of the metal–organic framework (MOF) by incorporating organic functional groups (−NH2). This resulted in an enhanced adsorption of SF6 and separation of the SF6/N2 mixture in the MOF ...
Vor 3 Tagen · Abstract. Unprotected alicyclic amines undergo α-C–H bond phosphonylation via a two-stage one-pot process involving the oxidation of amine-derived lithium amides with simple ketone oxidants, generating transient imines which are then captured with phosphites or phosphine oxides. Amines with an existing α-substituent undergo regioselective ...
Vor 4 Tagen · The use of engineered threonine aldolases allowed for this redox-neutral radical alkylation to proceed efficiently, giving rise to challenging α-trisubstituted and -tetrasubstituted ncAA products in a protecting-group-free fashion with excellent enantiocontrol. Mechanistically, this enantioselective α-alkylation capitalizes on the unique reactivity of the persistent enzymatic quinonoid ...
Vor 2 Tagen · Electron irradiation is known to be an important physical tool in tuning the properties of self-assembled organic molecules. Here, we use X-ray photoelectron spectroscopy (XPS) measurements to study the effect of electron bombardment on the structural properties of dithiol aromatic molecules, where the sulfur atoms are either in direct conjugation with phenyl rings (case of Biphenyl-4,4 ...
Vor 3 Tagen · The difunctionalization of olefins via radical-mediated functional group migration (FGM) strategy can simultaneously construct two or more chemical bonds, greatly improving the synthesis efficiency of organic molecules. Herein, the 1,2-dicarbofunctionalization of unactivated olefins containing migration grou
Vor 6 Tagen · Gommermann, N.; Knochel, P.* “2-Phenylallyl as a Versatile Protecting Group for the Asymmetric One-Pot Three-Compoment Synthesis of Propargylamines” Chem. Commun. 2005, 4175-4177. 384. Gommermann, N.; Knochel, P.* “Preparation of functionalized primary chiral amines and amides via an enantioselective three-component synthesis of propargylamines” Tetrahedron 2005, 61, 11418-11426.
