1443233-54-2

Upstream product

• 1428988-93-5 N-chloro-[(2,2-dimethylpent-4-enyl)aminomethyl]benzene 
• 100-46-9 benzylamine 
• 5497-67-6 2,2-dimethyl-4-pentenal 
• 136861-52-4 2,2-dimethylpent-4-enal 
• 592478-40-5 N-benzyl-2,2-dimethylpent-4-en-1-amine 

Relevant academic research and scientific papers

Understanding the Alkylation Mechanism of 3-Chloropiperidines – NMR Kinetic Studies and Isolation of Bicyclic Aziridinium Ions

The present study describes the kinetic analysis of the 3-chloropiperidine alkylation mechanism. These nitrogen mustard-based compounds are expected to react via a highly electrophilic bicyclic aziridinium ion, which is readily attacked by nucleophiles. Halide abstraction using silver salts with weakly coordinating anions lead to the isolation of these proposed intermediates, whereas their structure was confirmed by single crystal XRD. Kinetic studies of the aziridinium ions also revealed notable reactivity differences of the C5 gem-methylated compounds and their unmethylated counterparts. The observed reactivity trends were also reflected by NMR studies in aqueous solution and DNA alkylation experiments of the related 3-chloropiperidines. Therefore, the underlying Thorpe-Ingold effect might be considered as another option to adjust the alkylation activity of these compounds.

Behind the Mirror: Chirality Tunes the Reactivity and Cytotoxicity of Chloropiperidines as Potential Anticancer Agents

The pressing demand for sustainable antitumor drugs prompted us to investigate 3-chloropiperidines as potential mustard-based anticancer agents. In this study, an explorative set of variously decorated monofunctional 3-chloropiperidines (M-CePs) was efficiently synthesized through a fast and affordable route providing high yields of pure racemates and enantiomers. Consistently with their reactivity, M-CePs were demonstrated to alkylate DNA in vitro. On a panel of carcinoma cell lines, M-CePs exhibited low nanomolar cytotoxicity indexes, which showed their remarkable activity against pancreatic cancer cells and in all cases performed strikingly better than the chlorambucil control. Very interestingly, stereochemistry modulated the activity of M-CePs in unexpected ways, pointing to additional molecular mechanisms of action beyond the direct damage of genomic DNA. This encouraging combination of efficacy and sustainability suggests they are valid candidates for anticancer agent development.

Transition metal-free iodine-promoted haloamination of unfunctionalized olefins

A transition metal-free route to 3-halopiperidines and 2- halomethylpiperidines was described. In the presence of iodine, potassium persulfate and a suitable halogen source, intramolecular haloamination of 4-penten-1-amines and 5-hexen-1-amines proceeded readily, leading to the corresponding substituted piperidines in good isolated yields. This journal is the Partner Organisations 2014.

One-pot preparation of 3-chloropiperidine compounds via Cu(II)-promoted intramolecular chloroamination of unfunctionalized olefins

3-Chloropiperidine compounds were obtained via Cu(II)-promoted one-pot intramolecular chloroamination of N-benzyl-4-penten-1-amines and subsequent rearrangement. The reaction conditions leading to this skeleton were studied, and the structure of the product was confirmed by NMR as well as X-ray diffraction experiments.

A new method for intramolecular chloroamination of unfunctionalized olefins

A new method for the intramolecular chloroamination of unfunctionalized olefins is reported. The reactions were carried out at room temperature for 3 h using hydrated copper(II) chloride as both promoter and chlorine source, and the corresponding vincinal haloamines were obtained in good isolated yields.