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The dative N-B bond was used to simply assemble heterocycles with a skeleton akin to the 5-oxofuro2,3-bfuran motif. Twenty-five new N-B heterocycles were prepared via a highly efficient one-pot four-component reaction in yields and diastereoselectivities up to 95% and >97%, respectively. Several reaction intermediates were discovered using electrospray ionization mass spectroscopy which set the basis for the mechanism elucidation using DFT calculations.
Montalbano et al. (Wed,) studied this question.