Frage | Antworten |
Woodward-Hoffman rules for all pericyclic reactions | 1.Thermally Allowed when total number of (4q+2)s and (4ra) components is odd 2. Photochemically allowed when even |
Cycloadditions and group transfer reactions | (4n + 2) electrons then both components are suprafacial (4n) electrons than one component is suprafacial the other is antarafacial |
Electrocyclic reactions | (4n+2) electrons then disrotatory (4n) electrons then conrotatory |
[1,n] sigmatropic rearrangements | If (4n+2)- s,r -departs and reattaches on same face If (4n)-s,i or a,r Reverse for photo- departs and reattaches on different face |
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