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- Gryko, Dorota, et al. Show all 3 Authors
- Journal of organic chemistry 2013 v.78 no.8 pp. 4115-4122
- absorption; carbon; catalytic activity; chemical bonding; organic chemistry; palladium; vitamin B12
- ... Heptamethyl cobyrinate was transformed into hexamethyl 8-nor-cobyrinate. The crucial step involved the synthesis of new, vitamin B₁₂ derived cobryketone via palladium-catalyzed cleavage of the sp³–sp³ carbon–carbon bond with the liberation of the ketone. The replacement of sp³ carbon atom with sp² (CO) at the 8-position produces a bathochromic shift of all absorption bands and makes α and β bands ...