her of X and Y is hydrogen and A is a moiety selected from the group consisting of: ##STR2## WHEREIN Rb and Rb...http://www.google.fr/patents/US4036886?utm_source=gb-gplus-shareBrevet US4036886 - Processes for producing 4- and 5-phenyl pentenals Recherche avanc???e dans les brevets Num???ro de publicationUS4036886 AType de publicationOctroi Num???ro de demandeUS 05/676,393 Date de publication19 ju