Peter Nesvadba

Easy Large Scale Syntheses of 2,6-DI-t-Butyl- 7-Cyano-, 7-Carboxy-and 7-Methoxycarbonyl Quinone Methides

Abstract Easy large scale syntheses of 2,6-di-t-butyl-7-cyano-, 7-carboxy- and 7-methoxycarbonyl quinone methides 1-3 using cheap and readily available starting materials have been developed.

Synthesis of 2‐Hydroxybenzophenones by Oxidation of 3‐Aryl‐3H‐benzofuran‐2‐ones

Abstract Oxidation of 5,7‐di‐tert‐butyl‐3‐aryl‐3H‐benzofuran‐2‐ones 1 with alkaline potassium hexacyanoferrate (III) affords 3,5‐di‐tert‐butyl‐2‐hydroxybenzophenones 2 in good to moderate yields.

AN EASY SYNTHESIS OF SOME 1,2,3,4-TETRAHYDRO-9-OXA-10-PHOSPHA-PHENANTHRENE-10-OXIDES

2-Cycloalkenylphenols 3 react under mild conditions with PCl3 to give the 10-chloro-2,3,4,10-tetrahydro-1H-9-oxa-10- phospha-phenanthrenes 4. The latter are readily hydrolyzed to afford the 1,2,3,4-tetrahydro-9-oxa-10-phospha-phenanthrene-10-oxides 5 in good to excellent yields.