Novelties of triphasic phase transfer catalysed Zinin reduction of nitrochlorobenzene by H₂S-laden monoethanolamine

Abstract

The kinetics of Zinin reduction of m-chloronitrobenzene (m-CNB) with H2S-laden monoethanolamine (MEA) in a liquid–liquid–solid system catalysed by the anion exchange resin Amberlite IR-400 was investigated.

Three‐Component Synthesis of Thiazole‐2‐thione from Chalcone, Nitrobenzene and Carbon Disulfide

“…[20] The resulting HSO À serves as reducing agent for both nitro and nitroso group which are transformed into hydroxylamine 2 a'. [21] And the black Lead (II) sulfide can be detected through Pb(OAc) 2 test paper after reaction (details in the Supporting Information). Subsequently, chalcone 1 a reacts with N-phenylhydroxylamine 2 a' to form intermediate A, which undergoes dehydration to produce the imine intermediate In conclusion, we have developed a three-component strategy for the synthesis of thiazole-2-thiones from readily available nitrobenzene, chalcones and carbon disulfide.…”

Dual Optimization in Phase Transfer Catalyzed Synthesis of Dibenzyl Sulfide using Response Surface Methodology

“…In some earlier work, an alternative route for efficient utilization of H 2 S was employed by converting it to ammonium sulfide to produce industrially relevant fine chemicals, like dibenzyl sulfide (DBS) 3 and aromatic amines . Monoethanolamine (MEA)-based processes have incurred far-flung commercial acceptance as the preferred gas sweetening method for the removal of H 2 S from gas streams, owing to its low vapor pressure (high boiling point) and ease of reclamation over other alkanolamines . The biliquid phase transfer catalyzed (PTC) sulfidation of benzyl chloride (BC) 1 with H 2 S has tremendous potential to employ toxic H 2 S of several byproduct gas streams to produce value-added products, like 3 .…”