Intermolecular Heck reaction of a wide variety of aryl/heteroaryl iodi
des with alkylallenes Furnishes 1,3-dienes which undergo in situ Diels
-Alder cycloaddition to N-methylmaleimide. This cascade can be further
extended by interfacing with a prior Pd catalysed cyclisation. (C) 19
98 Elsevier Science Ltd. All rights reserved.