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Novel tandem ring-opening/ring-closing metathesis reactions of functionalized cyclohexenoids derived from -alpha-pinene



Novel tandem ring-opening/ring-closing metathesis reactions of functionalized cyclohexenoids derived from -alpha-pinene



Tetrahedron Letters 43(4): 699-702, 21 January



The cyclohexenone (+)-2, readily obtained from (-)-alpha-pinene 1 was elaborated to (+)-3 in an attempt to construct the AB rings of taxoids employing the ring-closure metathesis (RCM) reaction as the key step. In the event, a novel ring-opening/ring-closing metathesis reaction was encountered in the relatively strain free cyclohexenyl ring of (+)-3.

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