Chlorido[2,3,5,6-tetra-kis-(tert-butyl-sulfanylmeth-yl)phenyl-κ(3) S (2),C (1),S (6)]palladium(II) dichloro-methane monosolvate.

The title compound, [Pd(C26H45S4)Cl]·CH2Cl2, crystallizes with a disordered dichloro-methane solvent mol-ecule [occupancy ratio = 0.67 (4):0.33 (4)]. Two of the tert-butyl groups are also disordered [occupancy ratios = 0.70 (5):0.30 (5) and 0.63 (4):0.37 (4)]. Although the pincer ligand offers the possibility for coordination of two different metal atoms, the present structure shows only the coordination of a single Pd(II) atom in a typical S-C-S tridentate pincer manner. The Pd(II) atom is in a slightly distorted square-planar environment with the two tert-butyl-sulfanyl groups arranged in a trans con-formation and with a chloride ligand trans to the σ-bonded aromatic C atom. The structure exhibits a durene-like ligand frame, forming a dihedral angle of 13.6 (4)° with the metal coordination (Pd/S/S/Cl/C) environment. It is noteworthy that the tert-butyl groups are found in a syn arrangement, this being different to that found previously by Loeb, Shimizu & Wisner [(1998). Organometallics, 17, 2324-2327].

1,3-Bis[(tert-butylsulfanyl)methyl]-2,4,6-trimethylbenzene.

The complete mol-ecule of the title compound, C(19)H(32)S(2), is generated by crystallorgaphic twofold symmetry, with three C atoms lying on the axis. The C(ar)-C-S-C (ar = aromatic) torsion angle is 156.2 (2) °. In the crystal, the mol-ecules are linked by very weak C-H⋯S inter-actions, generating [001] chains.

A short and practical synthesis of two Hagen's gland lactones.

A seven-step total synthesis of Hagen's gland lactones 1 and 2 starting from 1,2-O-isopropylidene-alpha-D-xylofuranose 3 is reported. The success of this short and practical synthesis depends on the use of two key reactions: a stereoselective nucleophilic substitution at the anomeric position of 5 and 6, which allowed the construction of the gamma-lactone ring, and an alkyl substitution reaction on tosylated compound 4, which permitted the carbon chain elongation of the tetrahydrofuran ring appendage at C-6.

(2S,4R,5S)-5-Allyl-4-hydroxy-tetra-hydro-2-furylmethyl p-toluene-sulfonate.

In the title compound, C(15)H(20)O(5)S, the tetra-hydro-furan ring shows an envelope conformation. The crystal packing is stabilized by an inter-molecular O-H⋯O hydrogen bond, generating a ribbon structure along the a axis. Two weak inter-molecular C-H⋯O inter-actions are also observed.