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Premium DFT Studies of Dimerization Reactions of Boroles
Wang Zheng,
Zhou Yu,
Lee KaHo,
Lam Wai Han,
Dewhurst Rian D.,
Braunschweig Holger,
Marder Todd B.,
Lin Zhenyang
Publication year2017
Publication title
chemistry – a european journal
Resource typeJournals
Abstract Boroles undergo dimerization reactions to give Diels–Alder (DA) dimers, bridged‐bicyclic (BB) dimers or spiro dimers (SD) depending on the substituents on the borole. We performed DFT calculations to investigate how different substituents at the carbon atoms of the butadiene backbone as well as at the boron atom influence the dimerization reaction pathways. The DFT results show that, in general, both the DA and BB dimers are easily accessible kinetically, and the DA dimers are thermodynamically more stable than the BB dimers. When the substituent–substituent repulsive steric interactions are alleviated to a certain extent, the BB dimers are more stable than the DA dimer, and become accessible. The SD dimers are generally kinetically difficult to obtain. However, we found that aryl substituents promote the formation of the SD dimers.
Subject(s)alkyl , aryl , carbon atom , chemistry , computational chemistry , density functional theory , dimer , organic chemistry , ring (chemistry) , stereochemistry , steric effects , substituent
SCImago Journal Rank1.687

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