A completely selective entry to the triquinane family is described from a highly strained cycloundecadienyne framework, simply by choosing the correct propargylic position for the radical trigger (see scheme; A: natural protoilludane, B: linear triquinane, BMDMS=(bromomethyl)dimethylsilyl, TBS=tert-butyldimethylsilyl).
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Dhimane et al. (2002) studied this question.
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