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Novel domino oxidative coupling: C-C bond formation sequence to highly functionalized dibenzo[a,c]cycloheptenes.

Organic letters (2011-02-02)
Kristina Hackeloer, Gregor Schnakenburg, Siegfried R Waldvogel
ABSTRACT

A domino sequence involving various MoCl(5)-mediated oxidations followed by trapping and supposed [3,3]-sigmatropic rearrangement provides a fast access to the full carbon skeleton of metasequirin-B. A variety of different moieties R(1) and R(2) are tolerated.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Molybdenum(V) chloride, 95%
Sigma-Aldrich
Molybdenum(V) chloride, anhydrous, powder, 99.99% trace metals basis (excluding W)

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