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- W2499297307 abstract "Bisdehydrocorrin (BDHC) and corrinoid complexes are comparable in the electronic nature of the nuclear cobalt. Consequently, the double bonds at the periphery of the A and D rings of BDHC are not in conjugation with the interior double bonds. The steric effect is more pronounced for Co(I)(BDHC) than for vitamin B12s when the reaction with alkyl halides is carried out, and is attributed to the 1,3-diaxial-type interaction between angular methyl groups placed at the C(1) and C(19) positions of BDHC and an approaching alkyl ligand. The photolysis of the methylated and ethylated Co(III)(BDHC) complexes results in the normal homolytic Co—C cleavage under anaerobic conditions. On the other hand, the Co—C bond in the isopropyl derivative undergoes heterolytic cleavage to yield the isopropyl anion and Co(III)(BDHC). The Co(BDHC) complex can be used as a catalyst for selective hydrogenation of primary alkyl halides using sodium hydroborate as the stoichiometric reducing agent." @default.
- W2499297307 created "2016-08-23" @default.
- W2499297307 creator A5014644883 @default.
- W2499297307 date "1980-12-10" @default.
- W2499297307 modified "2023-09-27" @default.
- W2499297307 title "Vitamin B<sub>12</sub> Models with Macrocyclic Ligands" @default.
- W2499297307 doi "https://doi.org/10.1021/ba-1980-0191.ch010" @default.
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