31814-67-2Relevant academic research and scientific papers
Oppolzer-type intramolecular Diels-Alder cycloadditions via isomerizations of allenamides
Feltenberger, John B.,Hsung, Richard P.
supporting information; experimental part, p. 3114 - 3117 (2011/08/03)
A new approach to Oppolzer's intramolecular Diels-Alder cycloaddition (IMDA) through γ-isomerization of readily available N-tethered allenamides is described. These IMDA reactions are carried out in tandem with the allenamide isomerization or 1,3-H shift,
Studies on Vitamin D (Calciferol) and Its Analogues. 19. Rearrangement of Vinylallenes to 1-Hydroxylated Vitamin D Model Systems Lacking the D Ring and Side Chain
Condran, Patrick,Okamura, William H.
, p. 4011 - 4015 (2007/10/02)
The thermally induced sigmatropic shifts of vinylallenone 7 and vinylallenol 8 were studied.The former (7) rearranges (approximately 100 deg C, 18 h) to previtamin ketone model system 13 in essentially quantitative yield; further thermolysis (approximatel
