. 2023 Aug 1;13(16):10751–10755. doi: 10.1021/acscatal.3c02461

Table 1. Gold(I)-Catalyzed Reaction of 1a with Acetylene Gas to Form Chromane 2a^a.

entry	[Au(I)] (mol %)	solvent	yield (%)^b
1	A (6)	CH₂Cl₂	78
2	B (6)	CH₂Cl₂	71
3	C (6)	CH₂Cl₂	53
4	D (6)	CH₂Cl₂	50
5	A (6)	CHCl₃	89
6	A (6)	toluene	81
7^c	A (6)	CHCl₃	49
8	A (4)	CHCl₃	69
9^d	A (6)	CHCl₃	91

Reactions were carried out using 0.10 mmol scale of substrate 1a at 0.2 M concentration.

Yields determined by ¹H NMR using 1,1,2,2-tetrachloroethane as internal standard.

AgSbF₆ instead of NaBAr^F₄.

0.4 M concentration.

Table 1. Gold(I)-Catalyzed Reaction of 1a with Acetylene Gas to Form Chromane 2aa.