In the title compound, C14H19ClN2O, the diazepine ring adopts a boat conformation. The Cl atom of the chloro­acetyl group is trans to the N atom of the diazepine ring. In the crystal, the mol­ecules form chains running along the diagonal of the ac plane through N—H⋯O hydrogen bonds.

Three 1,5-benzodiazepines viz., N 5-chloroacetyl-, N 5-piperazinoacetyl-and N 5-morpholinoacetyl-2,2,4-trimethyl-1H-1,5-benzodiazepines have been synthesized. The structural characterisation and the conformational preferences of the compounds have been carried out using IR, 1D and 2D NMR spectral data. The NMR spectral data show that the N-acetyltetrahydro-1,5-benzodiazepines prefer to exist in boat conformation with exo orientation of >C=OatN 5 position in the solution state. The X-ray crystal structure of N 5morpholinoacetyl-2,2,4-trimethyl-1H-1,5-benzodiazepine also supports boat conformation in the solid state. The antimicrobial activity for N-acetyltetrahydro-1,5-benzodiazepines have been carried out. N-morpholinoacetyl-2,2,4-trimethyl-1H-1,5-benzodiazepine demonstrated better antibacterial and antifungal activities.

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The aim of this study is to determine the antibacterial effectiveness of leaves essential oil extracted from myrtle growing in Algeria. A cluster analysis of soil and water was effectuated for performing chemical and granulometric analyses. The essential oil was isolated from leaves by hydro distillation and analyzed by Gas Chromatography-Mass Spectrometry (GC/MS). The leaves yield reached a peak at the flowering stage (1.14%) and a minimum in the fruiting time (0.6%). Several compounds in the leaf essential oil were characterized including 49 components. The major compounds of the oil are α-pinene (55%), 1,8-cineole (33,42%) and limonene (33,42%). The effect of essential oil and specific antibiotics was investigated in vitro against twenty Gram-negative bacteria. The essential oil effect was colicidal with best inhibition zone (35 mm). This study showed that the myrtle essential oil in relation with the chemical composition of soil give a promising perspective for the production of essential oils with constant composition and specific activities.

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