... European Journal of Organic Chemistry. ... g, 3.5 mmol) in cyclohexane (4 mL) was stirred at 130 °C for 5 h. After cooling, the mixture was poured over several grams of ice and extracted with CH 2 Cl 2 . The organic phase was ... Koltunov , GKS Prakash , G. Rasul , GA Olah , J. Org. ...