Synthesis of benzo[g]isochromenes through Photo-Dehydro-Diels-Alder reaction
The Photo-Dehydro-Diels-Alder (PDDA) reaction is shown to be a versatile method for the preparation of highly functionalized naphthalenes. Thus, ketones 1 could be cyclized to the 1H-benzo[g]isochromen-4-(3H)-ones 11 and 12, mostly in good yields. The influence of various substituents on the regioselectivity of the reaction was investigated, and the mechanism is discussed based on theoretical calculations.
Wessig, Pablo,Mueller, Gunnar,Herre, Robert,Kuehn, Andreas
p. 2694 - 2719
(2007/10/03)
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