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. Author manuscript; available in PMC: 2022 Feb 5.
Published in final edited form as: ACS Catal. 2021 Jan 13;11(3):1368–1379. doi: 10.1021/acscatal.0c04608

Scheme 5. Conserved Chemoselectivity for Cross-Cycloadditions with 4-Substituted-1,3-Dienes.

Scheme 5.

a Conducted on 1.0 mmol scale with 1.25 mol% [(Me(Et)PDI)Fe(N2)]2(μ2-N2). Yield (and selectivity for [2+2]-cycloadduct 14aa) determined by integration of diagnostic 1H NMR signals relative to an internal standard. See Ref. 15b. b Conducted on 1.0 mmol scale with 2.5 mol% [(MePDI)Fe(N2)]2(μ2-N2). Isolated yield reported (with selectivity for the [2+2]-cycloadduct 17aa product in parentheses).