Pericyclic reactions of cyclobutyne: An exception to orbital symmetry considerations

The origins of barriers to orbital symme

The origins of barriers to orbital symmetry/topology-allowed pericyclic reactions: Conjugate addition of methylene to s-cis-1,3-butadiene

✍ Nathan L. Bauld; David Wirth 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 497 KB 👁 1 views

## Abstract The barriers on the MINDO/3 reaction paths for π and σ approaches to concerted cycloaddition of methylene to __s__‐__cis__‐1,3‐butadiene are analyzed by a new energy decomposition scheme and compared to the results of published extended Hückel calculations. The relatively small (6 kcal)