Table 2.

Enantioselective Synthesis of Chromenyl Pivalate from Phenols

entrya,b	1	R	Ar	% yieldc	% eed
1	1a	H	Ph	85	91
2	1b	H	p-BrC6H4	86	86
3	1c	H	2-Naph	68	84
4	1d	H	o-MeC6H4	77	84
5	1e	H	p-iPrC6H4	73	89
6	1f	H	p-CF3C6H4	76	88
7	1g	Me	Ph	85	90
8	1h	Br	Ph	83	83

^aConditions: CDCl₃ (0.1 M), 5 mol % A8 · (AuCl)₂, 10 mol % AgOTf for 4 h at 0 °C.

^bAbsolute stereochemistry assigned by analogy to 4e (Table 3).

^cIsolated yield of product after column chromatography.

^dDetermined by chiral HPLC.