Preparation of the organozinc halides.

Entry	RX	1	Time	% conva	Titerb
1	PhI	1a	2 h	99	0.89 M
2	4-MeO2CC6H4I	1b	2 h	99	0.90 M
3	c-HexBr	1c	22 h	97	0.86 M
4	n-C8H17Br	1d	4 h	98	0.87 M
5	4-CF3C6H4I	1e	2 h	99	0.95 M

^aApparent conversion determined by GC analysis after hydrolysis of the reaction mixture.

^bDetermined by GC analysis after iodolysis of the reaction mixture.¹⁷