2011•Synthetic CommunicationsRequires access

Synthesis of 3-Pyrazolinyl Chlorins Related to Chlorophyll by 1,3-Dipolar Cycloaddition Reaction from Methyl Pheophorbide-a

Jinjun Wang, Chunlin Liu, Jiazhu Li

Abstract

The synthesis of a series of 3-pyrazolinyl-substituted chlorins, possessing different basic skeletons of chlorophyll degradation products such as pheophorbide-a, pyropheophorbide-a, purpurin-18, purpurin-7, purpurin-5, chlorin-p 6, and chlorin-e 6, was fulfilled from methyl pheophorbide-a by chemical modification and 1,3-dipolar cycloaddition with diazomethane. The structures of new chlorins were characterized by ultraviolet (UV), infrared (IR), 1H NMR, and mass spectra and elemental analysis.

About this research paper

What this paper is about

Why it matters

OpenAlex reports 5 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Chlorin, Pheophorbide A, Chemistry, Diazomethane, Cycloaddition, Photochemistry, Proton NMR, 1,3-Dipolar cycloaddition