Rs. Varma et D. Kumar, Hypervalent iodine-mediated ring contraction of 2-arylidenecycloalkanones:A facile synthesis of 2-arylidenecycloalkane carboxylates, SYNTHESIS-S, (8), 1999, pp. 1288-1290
2-Arylidenecycloalkane carboxylates are readily prepared from easily access
ible 2-arylidenecycloalkanones using iodobenzene diacetate and triethyl ort
hoformate in the presence of perchloric acid.