Example 006

Photochemical electrocyclisation of (E,E)-2,4-hexadiene gives cis-3,4-dimethylcyclobutene

Photochemical electrocyclisation of (<em>E</em>,<em>E</em>)-2,4-hexadiene gives <em>cis</em>-3,4-dimethylcyclobutene
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R. Srinivasan, J. Am. Chem. Soc., 1968, 90, 4498–4499
DOI: 10.1021/ja01018a080