Triethyl phosphite → 1,6-Dihydrocyclopenta[c]carbazol-3(2H)-one

Participants

Reaction Conditions

Reaction Steps

Biphenyl 89 (9 g, 35 mmol) and triethylphosphite were added to a sealed bomb and heated at 120° C. overnight. After cooling to room temperature, the mixture was filtered to give 4 g of 1,2-dihydro-6H-cyclopenta[c]carbazole-3-one. Precipitation with diethyl ether yielded an additional 2 g of desired product. Common yield 90 as yellow powder was 77.5%.

Provenance & Evidence