S-Phenyl benzothioate

Please refer to full text to view abstrac

N-[4-(2-Propyn-1-yloxy)phenyl]-acetamide

Please refer to full text to view abstrac

Phenyl 4,6-di-O-acetyl-2,3-dide­oxy-1-thio-α-d-erythro-hex-2-enopyran­oside

The pyranosyl ring in the title compound, C16H18O5S, adopts an envelope conformation, with the acetyl groups in equatorial positions. In the crystal, weak C—H⋯O inter­actions link the molecules into chains

Prop-2-yn-1-yl 4,6-di-O-acetyl-2,3- dideoxy-a-D-erythro-hex-2-enopyranoside

The absolute structure of the title compound, C13H16O6, was determined. The pyranosyl ring adopting an envelope conformation. The acetyl groups are located in equatorial positions. The crystal structure features weak C—H O interactions

1,5-Anhydro-2-de­oxy-1,2-C-dichloro­methyl­ene-3,4,6-tri-O-(4-meth­oxy­benz­yl)-d-glycero-d-gulo-hexitol

The pyranosyl ring in the title compound, C31H34Cl2O7, adopts a twist-boat conformation. The 4-meth­oxy­benzyl groups are located in equatorial positions with the meth­oxy groups nearly coplanar with their respective rings [dihedral angles of 0.2 (3) and 9.4 (2)°]. The aromatic rings adopt orientations enabling them to participate in C—H⋯π inter­actions with neighboring meth­oxy groups. The crystal structure is additionally stabilized by weak C—H⋯O inter­actions

Aluminium triflate catalysed O-glycosidation : temperature-switched selective Ferrier rearrangement or direct addition with alcohols

A temperature-controlled mechanism switch between the Al(OTf)3-catalysed direct addition of alcohols or the Ferrier rearrangement reactions in some glycals is presented. The scope and limitations are investigated as are the influence of the stereochemistry and nature of the protecting groups on the glycal substrate

3,4,6-Tri-O-acetyl-1,2-[(S)-ethylidene]-b- D-mannopyranose

Please refer to full text to view abstrac

3,4,6-Tri-O-acetyl-1,2-[(S)-ethylidene]-β- D-mannopyranose

Please refer to full text to view abstrac

Water-soluble SNS cationic palladium(II) complexes and their Suzuki–Miyaura cross-coupling reactions in aqueous medium

Abstract: Unlike their SCS analogues, SNS pincer complexes are poorly studied for their use in coupling reactions. Accordingly, a series of water soluble cationic Pd(II) SNS pincer complexes have been successfully synthesised and investigated in detail for their catalytic activity in Suzuki–Miyaura coupling reactions. By using only 0.5 mol % loading of the complexes, the coupling of inactivated aryl bromides and activated aryl chlorides with various boronic acids in water was achieved in excellent yields and the catalysts were found to be reusable for three cycles without a significant loss of activity. The investigation of the mechanism of the reaction revealed that a Pd(II) to Pd(IV) route is the more likely pathway which was further supported by computational studies

Prop-2-yn-1-yl 4,6-di-O-acetyl-2,3-dide­oxy-α-d-erythro-hex-2-enopyran­o­side

The absolute structure of the title compound, C13H16O6, was determined. The pyranosyl ring adopting an envelope conformation. The acetyl groups are located in equatorial positions. The crystal structure features weak C—H⋯O inter­actions