Post 361260 (https://www.thevespiary.org/talk/index.php?topic=12101.msg36126000#msg36126000)
(Regis: "Internal aryl alkenes from aryl ketones (WOW!)", Novel Discourse)Patent US3927133 (http://l2.espacenet.com/dips/viewer?PN=US3927133&CY=gb&LG=en&DB=EPD)
you can find another way to get propenylbenzene from propiophenone by heating it with aluminium isopropoxide.