Cobaloximes resemble the natural Vitamin B12 in that they undergo free radical reactions with radical precursors. The proton NMR spectrum at 260 K gives sharp lines for the vinyl protons. At 298 K, the vinyl protons are not clearly seen. It is assumed that cobaloximes dissociate into radicals. This process is reversible.
Infrared analysis indicates an unconjugated aldehyde group.
The compound shows two halogen atoms in the mass spectrum. Proton and carbon NMR spectra are consistent with the assigned structure. We have developed an unusual method of preparing unconj- ugated aldehydes. The research was sponsored by the Murdock Foundation. The purpose of this research is to determined the steps for the synthesis of surfactin using solid phase protein synthesis methods.