1,8-diazabicyclo[5.4.0]undec-7-ene in dichloromethane T=20°C; 1 h; other reagents: triethylamine, 4-(dimethylamino)pyridine, tetrabutylammonium hydroxide; Further byproducts given. Title compound not separated from byproducts;

1,8-diazabicyclo[5.4.0]undec-7-ene in dichloromethane T=20°C; 0.0333333 h; other sucstituted 2'-hydroxychalcones, other reagents: triethylamine, 4-(dimethylamino)pyridine, tetrabutylammonium hydroxide, HCl, HClO4, other solvents: ethanol/water, water, CH2Cl2/water, other temperature and reaction time; Product distributionMechanism;

hydrogenchloride in ethanol; water T=20°C; 3 h; other reagents: triethylamine, 4-(dimethylamino)pyridine, 1,8-diazabicyclo<5.4.0>undec-7-ene, tetrabutylammonium hydroxide, HClO4;

4-(N,N-dimethlyamino)pyridine in dichloromethane T=20°C; 25 h; other reagents: triethylamine, 1,8-diazabicyclo<5.4.0>undec-7-ene, tetrabutylammonium hydroxide; Further byproducts given. Title compound not separated from byproducts;

1,8-diazabicyclo[5.4.0]undec-7-ene in dichloromethane T=20°C; 1 h; other reagents: triethylamine, 4-(dimethylamino)pyridine, tetrabutylammonium hydroxide; Further byproducts given. Title compound not separated from byproducts;

1,8-diazabicyclo[5.4.0]undec-7-ene in dichloromethane T=20°C; 0.0333333 h; Further byproducts given. Title compound not separated from byproducts;

perchloric acid in water T=55°C; 2.75 h; Mechanism;

1,8-diazabicyclo[5.4.0]undec-7-ene in dichloromethane T=20°C; 0.0333333 h; other sucstituted 2'-hydroxychalcones, other reagents: triethylamine, 4-(dimethylamino)pyridine, tetrabutylammonium hydroxide, HCl, HClO4, other solvents: ethanol/water, water, CH2Cl2/water, other temperature and reaction time; Product distributionMechanism;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3647935', constants.ctx, '0')">3,3-dimethyldioxirane</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1730800', constants.ctx, '0')">dichloromethane</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '635680', constants.ctx, '0')">acetone</a> <br />T=20&deg;C;&nbsp;24&nbsp;h;&nbsp;<br /> &nbsp;