RESTRICTED ROTATION INVOLVING THE TETRAHEDRAL CARBON.XXI. DIRECT OBSERVATION OF HINDERED ROTATION ABOUT a Csp3–C(=O) BOND IN PERISUBSTITUTED 9-(1-Methoxycarbonyl-1-Methylethyl)triptycenes BY1H NMR SPECTRA

Chemistry Letters - Japan
doi 10.1246/cl.1978.475
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The Chemical Society of Japan

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