Lower Lewis acidity boranes demonstrate greater tolerance to combinations of water/strong Brønsted bases than B(C6 F5 )3 , this enables Si-H bond activation by a frustrated Lewis pair (FLP) mechanism to proceed in the presence of H2 O/alkylamines. Specifically, BPh3 has improved water tolerance in the presence of alkylamines as the Brønsted acidic adduct H2 O-BPh3 does not undergo irreversible ...

The first enantioselective organocatalytic reductive amination reaction has been accomplished. The development of a new chiral phosphoric acid catalyst has provided a convenient strategy for the enantioselective construction of protected primary amines and provided a highly stereoselective method for the reductive amination of heterocyclic amines. A diverse spectrum of ketone and amine substrat...

A facile preparation of neoglycoconjugates has been developed with a commercially available chemical, p-nitrophenyl anthranilate (PNPA), as a heterobifunctional linker. The two functional groups of PNPA, the aromatic amine and the p-nitrophenyl ester, are fully differentiated to selectively conjugate with glycans and other biomolecules containing nucleophiles. PNPA is efficiently conjugated wit...

Transaminases have arisen as one of the main biocatalysts for amine production but despite their many advantages, stability is still a concern widespread application. One reasons instability need to use an excess amino donor when trying synthesise amines with unfavourable equilibria. To circumvent this, recycling systems donor, such acid dehydrogenases or aldolases, proved useful push equilibri...

2-Aminobenzothiazole-6-carboxylic acid (1), on condensation with chloroacetyl chloride yielded 2-(2-chloroacetylamino)benzothiazole-6-carboxylic acid (2), which on amination with hydrazine hydrate yielded in turn 2-(2-hydrazinoacetylamino)benzo-thiazole-6-carboxylic acid (3). Compound 3, on condensation with various aromatic aldehydes afforded a series of 2-{2-[N'-(arylidene)hydrazino]acetylami...

DNA-templated self-assembly is an emerging strategy for generating functional supramolecular systems, which requires the identification of potent multi-point binding ligands. In this line, we recently showed that bis-functionalized guanidinium compounds can interact with ssDNA and generate a supramolecular complex through the recognition of the phosphodiester backbone of DNA. In order to probe ...

It is possible to enhance targeting of a DNA stem flank domain with a complementary DNA when it is conjugated with diphenyl ether at the branch point. The nucleoside 2'-deoxy-5-methyl- N 4-(4-phenoxyphenyl)cytidine (5) was synthesized from thymidineby tritylation, acetylation, amination via 2,4, 6-trimethylbenzenesulfonyl activation and subsequent de-protection. When a three-way junction is for...

Dibenzylamine motifs are an important class of crucial organic compounds and widely used in fine chemical pharmaceutical industries. The development the efficient, economical, environmentally friendly synthesis amines using transition metal-based heterogeneous catalysts remains both desirable challenging. Herein, we prepared covalent framework (COF)-supported reduced COF-supported Pd-based cata...