Tanaka T, Nagahama M, Yadav ND, Iwasaki H, Ozeki M, Kojima N, Yamashita M. Reaction of 2a,8b-Dihydrobenzo[b]cyclobute[d]pyran-3-ones with Dimethylsulfoxonium Methylide.
Chem Pharm Bull (Tokyo) 2016;
64:1056-61. [PMID:
27373667 DOI:
10.1248/cpb.c16-00303]
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Abstract
Using dimethylsulfoxonium methylide as the methylene transfer reagent, 2a,8b-dihydrobenzo[b]cyclobute[d]pyran-3-ones were converted into 2,2'-biphenol derivatives as major products and dihydrodibenzofurans as minor products. The reaction mechanism was extrapolated from a deuteration experiment with CD2=S(O)(CD3)2.
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