Ring opening of 1-arylmethyl-2-(cyanomethyl)aziridines with HBr afforded 3-(arylmethyl)amino-4-bromobutyronitriles via regiospecific ring opening at the unsubstituted aziridine carbon. Previous experimental and theoretical reports show treatment of the same compounds with benzyl bromide to furnish 4-amino-3-bromobutanenitriles through ring opening at the substituted aziridine carbon. To gain in...

In the title compound, C(9)H(10)N(3)S(+)·NO(3) (-), the indole ring system and the thiouronium group are nearly perpendicular, with a dihedral angle of 88.62 (6)°. Hydrogen bonding generates two-dimensional networks which are linked to each other via π stacking inter-actions of the indole groups [average inter-planar ring-ring distance of 3.449 (2) Å].

In the title mol-ecule, C(16)H(15)N(3), the indole ring system is planar within 0.021 (3) Å and the phenyl ring is inclined to this plane by 17.32 (14)°. π-π contacts involving the pyrrole rings of inversion-related indole units [centroid-centroid distance = 3.5187 (17) Å] stabilize the crystal structure.

The title compound, C26H21F3N2, was prepared by the palladium-catalysed reaction of (2,2,2-tri-fluoro-eth-yl)benzene with 1-methyl-1H-indole. The dihedral angle between the planes of the indole-ring systems is 52.13 (6)° and the N-methyl groups point away from each other. Three short intra-molecular C-H⋯F contacts are observed.

Indole-3-acetic acid (IAA) homeostasis was investigated during seed germination and early seedling growth in Scots pine (Pinus sylvestris). IAA-ester conjugates were initially hydrolyzed in the seed to yield a peak of free IAA prior to initiation of root elongation. Developmental regulation of IAA synthesis was observed, with tryptophan-dependent synthesis being initiated around 4 d and tryptop...

The indole N-H hydrogen in the title compound, C(15)H(12)FN, does not display classical hydrogen bonding. Rather it forms an interaction with the π system of an adjacent indole, resulting in weakly inter-acting chains along the [001] direction.