Scheme 3.
B(C6F5)3 activation modes (A). Calculated energy barriers (kcal mol−1) for the cyclization of the diazo compound (B–D). DFT calculations at the SMD/M06‐2X‐D3/def2‐TZVP//SMD/M06‐2X/6‐31G(d) level of theory using CH2Cl2.
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