138189-91-0Relevant academic research and scientific papers
AZATRICYCLES FROM SUBSTITUTED PYRIDINES. SYNTHESIS AND REARRANGEMENT OF N-ETHOXYCARBONYL-2-AZATRICYCLO3,7>DEC-8-ENES
Krow, Grant R.,Lee, Yoon B.,Raghavachari, Ramesh,Szczepanski, Steven W.
, p. 8499 - 8514 (1991)
The scope and relative rates of intramolecular cycloaddition reactions of methyl-substituted 2-(3-butenyl)-1,2-dihydropyridines 4 have been studied.Cycloadducts 5 can be rearranged to 14 upon reaction with bromine, except when olefinic methyl groups are present.
UNEXPECTED RATE RETARDATION BY 4-ALKYL SUBSTITUENTS IN NEUTRAL ELECTRON DEMAND DIELS-ALDER REACTIONS OF 2-(3-BUTENYL)-1,2-DIHYDROPYRIDINES
Krow, Grant R.,Lee, Yoon B.,Raghavachari, Ramesh
, p. 3187 - 3190 (2007/10/02)
Sustmann's equation gives insight into the slower intramolecular reactivity of 4-alkyl-2-(3-butenyl)-1,2-dihydropyridines 2a-f relative to the parent 1a.Steric effects are inconsistent with the observed rate data.
