Synthesis and crystal structure of 1,3,5-tris-[(1-benzotriazol-1-yl)meth-yl]-2,4,6-tri-ethyl-benzene.

In the crystal structure of the title compound, CHN, the tripodal mol-ecule exists in a conformation in which the substituents attached to the central arene ring are arranged in an alternating order above and below the ring plane. The three benzotriazolyl moieties are inclined at angles of 88.3 (1), 85.

Sustainable Peptide Synthesis Enabled by a Transient Protecting Group.

The growing interest in synthetic peptides has prompted the development of viable methods for their sustainable production. Currently, large amounts of toxic solvents are required for peptide assembly from protected building blocks, and switching to water as a reaction medium remains a major hurdle in peptide chemistry. We report an aqueous solid-phase peptide synthesis strategy that is based on a water-compatible 2,7-disulfo-9-fluorenylmethoxycarbonyl (Smoc) protecting group.

2-{2,4,6-Tris(bromo-meth-yl)-3,5-bis-[(1,3-dioxoisoindolin-2-yl)meth-yl]benz-yl}iso-indoline-1,3-dione toluene monosolvate.

In the title compound, C36H24Br3N3O6·C7H8, the toluene solvent mol-ecule is associated with the receptor mol-ecule via C-H⋯π bonding. The planes of the phthalimido groups are inclined at 77.0 (1), 63.

1,3,5-Tris(bromo-meth-yl)-2,4,6-trimeth-oxy-benzene.

There are three independent mol-ecules in the asymmetric unit of the title compound, C12H15Br3O3, two of which have approximate trigonal symmetry, the third being conformationally different as it adopts near mirror symmetry. The crystal structure features C-H⋯Br inter-actions, a weak C-H⋯O hydrogen bond, π-π inter-actions [minimum ring centroid separation = 3.4927 (18) Å] and a short Br⋯Br contact [3.