potassium hydrogensulfate T=140°C; 4 h; investigation of regioselectivity of dehydration with var. reagents in terpene derivatives; Product distribution;

<b>Multi-step reaction with 2 steps<br /> </b>1: KHSO₄ / 4 h / 140 &deg;C<br />2: TFA / nitromethane / 1.5 h / 0 &deg;C<br /> <br /> &nbsp;

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<b>Multi-step reaction with 2 steps<br /> </b>1: 8 percent Chromat_. / KHSO₄ / 0.75 h / 140 &deg;C / investigation of regioselectivity of dehydration with var. reagents in terpene derivatives<br />2: TFA / nitromethane / 1.5 h / 0 &deg;C<br /> <br /> &nbsp;

<b>Multi-step reaction with 2 steps<br /> </b>1: 15 percent / trifluoroacetic acid / CH₂Cl₂ / 0.33 h / 0 &deg;C<br />2: 92 percent<br /> <br /> &nbsp;