The thermal C2-C6/[2 + 2] cyclisation of enyne-allenes: reversible diradical formation |
| |
| Authors: | Cinar Mehmet Emin Vavilala Chandrasekhar Fan Jian Schmittel Michael |
| |
| Institution: | Department of Chemistry and Biology, Universit?t Siegen, Siegen, Germany. |
| |
| Abstract: | New enyne-allenes, structurally designed toward the thermal C(2)-C(6)/2 + 2] cyclisation mode, were prepared and characterised, one of them even by X-ray crystallography. The mechanism of their transformation to formal 2 + 2] cycloadducts was interrogated by trapping experiments and DFT computations. The results support a stepwise mechanism that involves the reversible formation of the C(2)-C(6) diradical intermediate. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
