Sarpong R, Su JT, Stoltz BM. The development of a facile tandem Wolff/Cope rearrangement for the synthesis of fused carbocyclic skeletons.
J Am Chem Soc 2004;
125:13624-5. [PMID:
14599176 DOI:
10.1021/ja037587c]
[Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A set of mild processes for the conversion of vinyl cyclopropyl diazo ketones to highly functionalized cycloheptadienones and vinyl cyclopentenones by use of a target-inspired tandem Wolff/Cope rearrangement sequence is described. A divergent reaction course of the vinyl cyclopropyl diazo ketone substrates under sono- or photochemical activation provides good to excellent yields (55-98%) of the product cycloheptadienones and vinyl cyclopentenones.
Collapse