Synthesis of Functionalized Medium‐Sized trans‐Cycloalkenes by 4π Electrocyclic Ring Opening–Alkylation Cascade
2019
: Development of a novel synthetic method for medium-sized trans-cycloalkenes (TCAs) is described. Functionalized TCAs are readily prepared from simple cycloalkanones in a few steps, namely, enol silyl ether formation, [2+2] cycloaddition, and domino 4π electrocyclic ring opening/alkylation (conjugate addition). The first example of central-to-planar chirality transfer from enantiomerically enriched cyclobutenes to TCAs is also described.
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