π-Bond Screening in Benzonorbornadienes: The Role of 7-Substituents in Governing the Facial Selectivity for the Diels-Alder Reaction of Benzonorbornadienes with 3,6-Di(2-pyridyl)- s-Tetrazine(‡)

Benzonorbornadiene 21, 7-spirocyclopropylbenzonorbornadiene 23, 7,7- dimethylbenzonorbornadiene 25, and 7-spirocyclopentylbenzonorbornadiene 27 have been reacted with 3,6-di(2-pyridyl)-s-tetrazine (rate: 21>23>25=27) to form symmetrical 4,5- dihydropyridazines which are stable towards fragment...

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Bibliografske podrobnosti
izdano v:Molecules
Main Authors: Warrener, Ronald N., Harrison, Peter A.
Format: Artigo
Jezik:Inglês
Izdano: MDPI 2001
Teme:
Article
Online dostop:https://ncbi.nlm.nih.gov/pmc/articles/PMC6236418/
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.3390/60400353
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