[reaction: see text]. Radicals derived from the phosphorus reagents, ethylpiperidine hypophosphite (EPHP) and diethylphosphine oxide (DEPO), are used in two related approaches to synthesis of the alkaloid horsfiline (1). In particular, DEPO proves beneficial for effecting cyclizations at 80 degrees C that are difficult or impossible with Bu(3)SnH.
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http://dx.doi.org/10.1021/ol051095i | DOI Listing |
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