73089-92-6Relevant academic research and scientific papers
Small Rings, 87. - Search for Alternative Routes to Tetra-tert-butyltetrahedrane; Synthesis of Sterically Overcrowded Molecules
Maier, Guenther,Rang, Harald,Emrich, Rolf
, p. 153 - 160 (2007/10/02)
Ketene 3 can be isomerized to tricyclopentanone 2 by treatment with silica gel.Thus, the yield of tetrahedrane 5, which is formed upon irradiation of 2, has been improved.On the other hand, diazoketone 10 cannot be used as a precursor for 2.This failure is due to steric hindrance.For the same reason cyclobutadiene 4 is a very poor candidate for Diels-Alder cycloadditions. - Key Words: Valence isomerization / Diazoketons / Cycloadditions / Steric hindrance
