Does anyone know about the synthesis of cobinamide (vitamin B12 precursor)?

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Alexander Johs

This paper describes the synthesis of cobinamides:

Christina Wedemeyer-Exl; Tamis Darbre; Reinhart Keese. Preparation of Dicyano- and Methylcobinamide from Vitamin B12a. Synthesis 2008; 21: 3429-3432

DOI: 10.1055/s-0028-1083187

https://www.thieme-connect.de/DOI/DOI?10.1055/s-0028-1083187

Ali Ghafarinazari

thanks