Results 191 to 200 of about 27,486 (241)
Some of the next articles are maybe not open access.
Retro‐Cycloaddition Reaction of Pyrrolidinofullerenes.
ChemInform, 2005AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Nazario, Martín +5 more
openaire +2 more sources
1994
Die thermische [2+2]Cycloaddition von Alkenen 1 ist nach den Woodward-Hoffmann-Regeln 1) suprafacial symmetrieverboten und kann nur in speziellen Fallen erfolgreich durchgefuhrt werden. Hingegen ist das photochemische Pendant erlaubt und wird als praparativ wertvolle Methode zur Bildung von Vierringsystemen 2 vielfaltig genutzt.2–4)
Thomas Laue, Andreas Plagens
openaire +1 more source
Die thermische [2+2]Cycloaddition von Alkenen 1 ist nach den Woodward-Hoffmann-Regeln 1) suprafacial symmetrieverboten und kann nur in speziellen Fallen erfolgreich durchgefuhrt werden. Hingegen ist das photochemische Pendant erlaubt und wird als praparativ wertvolle Methode zur Bildung von Vierringsystemen 2 vielfaltig genutzt.2–4)
Thomas Laue, Andreas Plagens
openaire +1 more source
Cycloadditions and Cycloreversions I. [2+2]-Cycloaddition
1992It was pointed out in the preceding chapter that correlation diagrams can be read from right to left as easily as from left to right. This is certainly true from the formal viewpoint of orbital symmetry, but does not preclude the need to examine the geometric and energetic consequences of the nuclear motions involved.
openaire +1 more source
Staudinger ketene cycloaddition
2009Also known as the Staudinger reaction. [2 + 2]-Cycloaddition of ketene and imine to form β-lactams. Other coupling partners for ketenes include: olefin to give cyclobutanone and carbonyl to give β-lactone.
openaire +1 more source
Cycloadditions. VIII. Cycloaddition of vinyl azides to ketenes
The Journal of Organic Chemistry, 1972Alfred Hassner +2 more
openaire +1 more source