Table 3.

Synthesis of epoxides by the reaction of 1-X with alkenes followed by the treatment with NaOMe.^a

Entry	Alkene	Product	X	Yield (%)b
1	2a	6a	Br	95c
2			I	96c
3	2b (Z:E = 72:28)	6b	Br	68 (cis:trans = 74:26)
4			I	89 (cis:trans = 74:26)
5	2c	6c	Br	73c
6			I	86c
7	(E)-2d	6d	Br	53
8			I	38d
9	(Z)-2d	6d’	Br	60
10			I	67d
11	2e	6e	Br	52e
12			I	57e
13	2f	6f	Br	49e
14			I	47e
15	2g	6g	Br	69
16			I	0

^aThe electrolysis was carried out using 1.3 equiv of Bu₄NBr or Bu₄NI (based on the alkene which was added after electrolysis) with 2.1 F/mol of electricity based on Bu₄NBr or Bu₄NI. ^bIsolated yield. ^cYield was determined by GC. ^d2.0 Equiv of Bu₄NI was used. ^eReacted with 2.5 equiv of NaOMe for 2 h.