Chemistry · Pericyclic Reactions
Pericyclic reactions involved in the synthesis of Vitamin D from Ergosterol are:
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- 14π electrocyclization followed by 6π electrocyclic ring open ing
- 2[3,3] sigmatropic rearrangement followed by [1,7] sigmatropic shift
- 3[1,5] sigmatropic shift followed by 6π electrocyclic ring opening
- 46π electrocyclic ring opening followed by [1,7] sigmatropic shift✓
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6π electrocyclic ring opening followed by [1,7] sigmatropic shift
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