Table 1. Screen for the Optimal Equivalences of MgCl₂ and NH₄Cl^g.

^aAll reactions were run with 1 nmol of 1a.

^bThe percent conversions (% conv.) were determined by LC/MS after the quenching procedure, as described in the Supporting Information.

^cThe MS trace was of higher quality relative to that of Trial 6 despite a lower conversion.

^dThe MS trace was of higher quality relative to Trial 10.

^e,fThe MS signals for those were of lower quality relative to Trial 10.

^g*Catalyst B instead of A. ΔCatalyst B instead of A, reaction time 5 min. ¥Catalyst B instead of A, reaction time 60 min.