Table 2.

The yields and products distribution from iodolactonization of unsaturated carboxylic acids 4a–c (according to GC).

	cis-$\mathit{\delta }$-Iodo-$\mathit{\delta }$-lactones			$\mathit{\gamma }$-Iodo-$\mathit{\delta }$-lactones		$\mathit{\delta }$-Hydroxy-$\mathit{\gamma }$-lactones
	yield [%]	trans	cis	trans,trans	cis,trans	trans	cis
$-C_{10}{H}_7$				-	-	12a 10%	13a 90%
$-C_6{H}_5$	75	-	11b 10%	9b 42%	10b 33%	12b 4%	13b 11%
$-C_6{H}_{4}F$	69	-	11c 8%	9c 37%	10c 30%	12c 7%	13c 18%