Table 2.

Synthesis of halohydrins by the reaction of 1-X with alkenes followed by the treatment with NaOH.^a

Entry	Alkene	Product	Yield (%)b
1	2a	5a-Br, 5a-I	5a-Br: 87
2			5a-I: 84c
3	2b (Z:E = 72:28)	5b-Br, 5b-I	5b-Br: 74 (trans:cis = 79:21)
4			5b-I: 94 (trans:cis = 71:29)
5	2c	5c-Br, 5c-I	5c-Br: 57
6			5c-I: 53
7	(E)-2d	5d-Br, 5d-I	5d-Br: 73
8			5d-I: 35
9	(Z)-2d	5d’-Br, 5d’-I	5d’-Br: 75
10			5d’-I: 51

^aThe electrolysis of Bu₄NBr and Bu₄NI was carried out using 1.3 equiv of Bu₄NX (based on the alkene which was added after the electrolysis) with 2.1 F/mol of electricity based on Bu₄NX. ^bIsolated yield. ^cYield was determined by GC.