Abstract
A method for the simple preparation of 2-ethoxy-N-propylbenzo[e][1,2]oxaphosphinine-3-carboxamide 2-oxide via an ultrasound technique using catalytic amounts of CuI is reported. The formation of the amide could indicate the isomerization of the formed E-alkene intermediate to its Z-form, assisted by the sonication irradiation, and such transformation under the presented conditions has not been previously reported in the literature.
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