ChemInform Abstract: Carbocyclization Reaction of ω‐Iodo‐ and 1,ω‐Diiodo‐1‐alkynes Without the Loss of Iodine Atoms Through a Carbenoid‐Chain Process.

Abstract

2008 Furan derivatives R 0060 Carbocyclization Reaction of ω-Iodoand 1,ω-Diiodo-1-alkynes Without the Loss of Iodine Atoms Through a Carbenoid-Chain Process. -In the presence of lithium compounds, iodoalkynes undergo novel cycloisomerization to give synthetically important (iodomethylene)tetrahydrofurans. The synthesis of cyclopentane and tetrahydropyran analogues is also possible. -(HARADA*, T.; MURAMATSU, K.; MIZUNASHI, K.; KITANO, C.; IMAOKA, D.; FUJIWARA, T.; KATAOKA, H.; J.