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Lewis base-promoted annulation reactions with MBHADs have emerged as a key platform for the construction of functionalized carbo- and heterocycles. MBHADs, which are economical and readily available, exert diverse and amazing reactivity when reacted with a wide range of electrophiles. A variety of carbo- and heterocycles, most of which are predominant in natural products and pharmaceuticals, could be constructed with high efficiency. This tutorial review will describe these annulation reactions, with a special emphasis on recent work regarding diverse reactivities of MBHADs.
Xie et al. (Thu,) studied this question.