Mechanochemistry is an alternative for sustainable solvent-free processes that has taken the big step to become, in the near future, a useful synthetic method for academia and the fine chemical industry. The apparatus available, based on ball milling systems possessing several optimizable variables, requires too many control and optimization experiments to ensure reproducibility, which has limited its widespread utilization so far. Herein, we describe the development of an automatic mechanochemical single-screw device consisting of an electrical motor, a drill, and a drill chamber. The applicability and versatility of the new device are demonstrated by the implementation of di- and multicomponent chemical reactions with high reproducibility, using mechanical action exclusively. As examples, chalcones, dihydropyrimidinones, dihydropyrimidinethiones, pyrazoline, and porphyrins, were synthesized with high yields. The unprecedented sustainability is demonstrated by comparison of EcoScale and E-factor values of these processes with those previously described in the literature.

No abstract

No abstract

Purpose This paper aims to ascertain whether a company with a solid reputation for corporate sustainability leadership deems its workforce to be as important as its external stakeholders when developing and communicating its sustainability activities, and to evaluate its workforce’s recognition of such activities. Design/methodology/approach To achieve these aims, a case study of a leading Brazilian company was carried out. The authors conducted an interview with the corporate sustainability department and submitted a survey by questionnaire to its employees. The data were complemented by documentary analysis of the company’s annual reports, sustainability reports, corporate website, newsletters and press releases. Findings Results suggest that the company does attribute significant importance to its workforce and that its employees have sound knowledge of its sustainability practices and engage with them. Research limitations/implications Given that the research adopts a case study approach, the scope for generalisation is limited. Originality/value The present study explores a neglected aspect of extant research – the relations between corporate sustainability and human resources.

No abstract