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2004
Ring closure reactions
O 0130
Broensted Acid-Promoted Cyclizations of Siloxyalkynes with Arenes and Alkenes.
New Broensted acid-mediated cyclizations of siloxyalkynes with simple arenes and
51- 035 —
alkenes affording substituted tetralone and cyclohexanone derivatives is reported. The
investigations reveal a range of unactivated arenes and alkenes which efficiently participate in the carbocyclizations affording the corresponding cyclization precursors in
good yields. — (ZHANG, L.; KOZMIN*, S. A.; J. Am. Chem. Soc. 126 (2004) 33,
10204-10205; Dep. Chem., Univ. Chicago, Chicago, IL 60637, USA; Eng.) —
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