Abraham M, Reischl W, Kirchner KA, Roller A, Veiros LF, Widhalm M. Tandem RCM-Claisen rearrangement-[2+2] cycloaddition of O,O'-(but-2-en-1,4-diyl)-bridged binaphthols.
Molecules 2012;
17:14531-54. [PMID:
23222901 PMCID:
PMC6268543 DOI:
10.3390/molecules171214531]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 11/29/2012] [Accepted: 12/03/2012] [Indexed: 11/16/2022] Open
Abstract
Attempted RCM of 2,2'-bis(allyloxy)-1,1'-binaphthyl resulted in a Claisen-type rearrangement of a postulated labile dioxacyclodecine proceeding at room temperature and followed by [2+2] cycloaddition. Structures of products were confirmed by X-ray crystallography. A mechanistic rationalisation based on relative stabilities of proposed intermediates and transition states is provided.
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