Are there alternatives to 4-(4-Nitrophenoxy)piperidine (CAS: 162402-39-3) in synthesis?

Alternatives to 4-(4-Nitrophenoxy)piperidine (CAS: 162402-39-3) include other substituted piperidines and analogs such as 4-(4-methoxyphenoxy)piperidine or 4-(4-aminophenoxy)piperidine. These compounds can serve similar functional roles in certain synthetic pathways, offering different reactivity and properties. Common alternative reagents in synthesis include various nitro compounds and piperidine derivatives.