Table 1.

AgBF₄ promoted glycosylations of glycosyl acceptors 12–15.

entry	D	A	time	product	yield, %	α/β ratio
1	1	13	24 h	17a	-a	-
2b	1	13	16 h	17a	91	1.4/1
3c	1	13	5 h	17a	95	2.0/1
4	2a	13	5 min	17a	92	2.4/1
5	2b	13	5 min	17b	96	β only
6	2b	14	24 h	18b	82	β only
7	3a	13	10 min	17a	89	1.2/1
8	3b	13	10 min	17b	91	β only
9	3b	14	15 min	18b	84	β only
10	3c	13	15 min	17c	91	1.6/1
11	4a	15	5 min	19a	87	7.4/1
12	4b	13	20 min	17b	90	β only
13	5a	13	5 min	17a	95	1.3/1
14	5a	14	5 min	18a	92	1.4/1
15	5b	13	10 min	17b	90	β only
16	5c	13	20 min	17c	75	1.2/1
17	6	13	24 h	17a	-a	-
18d	6	13	24 h	17a	91	1.2/1
19e	6	13	10 min	17a	92	1.2/1
20	7	13	24 h	17a	-a	-
21d	7	13	24 h	17a	89	1.0/1
22e	7	13	20 min	17a	76	1.2/1
23	8	13	5 min	17a	97	1.6/1
24	8	12	10 min	16a	91	1/3.4
25	9	13	20 h	17a	81	2.0/1
26	9	15	1.5 h	19a	81	2.3/1
27	10	13	24 h	17a	-a	-
28	11	13	5 min	17a	80	1/1.5
29	11	12	2 days	16a	65	1/5.4

^ano product formation was detected; all glycosylations were promoted with AgBF₄ except the following:

^b3.0 equiv. of BF₃-Et₂O was used

^c3.0 equiv. of BF₃-Et₂O and 0.5 equiv. of AgBF₄ was used

^d2.0 equiv. of NIS was used

^e2.0 equiv. of NIS and 0.5 equiv. of AgBF₄ was used.