Journal
MOLECULES
Volume 26, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/molecules26216544
Keywords
cobalt bis(dicarbollide); nitrilium derivatives; amidines; nucleophilic addition reactions; synthesis; structure
Funding
- Russian Science Foundation
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A series of novel cobalt bis(dicarbollide) based amidines were synthesized by adding primary and secondary amines to a specific compound, leading to different isomer mixtures when reacting with primary vs. secondary amines. Crystal structures of these compounds were determined by X-ray diffraction.
A series of novel cobalt bis(dicarbollide) based amidines were synthesized by the nucleophilic addition of primary and secondary amines to highly activated B-N+& EQUIV;C-R triple bond of the propionitrilium derivative [8-EtC & EQUIV;N-3,3 & PRIME;-Co(1,2-C2B9H10)(1 & PRIME;,2 & PRIME;-C2B9H11)]. The reactions with primary amines result in the formation of mixtures of E and Z isomers of amidines, whereas the reactions with secondary amines lead selectively to the E-isomers. The crystal molecular structures of E-[8-EtC(NMe2)=HN-3,3 & PRIME;-Co(1,2-C2B9H10)(1 & PRIME;,2 & PRIME;-C2B9H11)], E-[8-EtC(NEt2)=HN-3,3 & PRIME;-Co(1,2- C2B9H10)(1 & PRIME;,2 & PRIME;-C2B9H11)] and E-[8-EtC(NC5H10)=HN-3,3 & PRIME;-Co(1,2-C2B9H10)(1 & PRIME;,2 & PRIME;-C2B9H11)] were determined by single crystal X-ray diffraction.
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