Example 011

Secondary orbital overlap in the [4π + 2π] dimerisation of 1,3-butadiene

Secondary orbital overlap in the [4 + 2] dimerisation of 1,3-butadiene
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F. Hofmann, Angew. Chem., 1912, 25, 1462–1467
DOI: 10.1002/ange.19120252903