Reaction of Acyl Chlorides with In Situ Formed Zinc Selenolates: Synthesis of Selenoesters versus Ring-Opening Reaction of Tetrahydrofuran

Table 2

Preliminary results (see Scheme 4).

Entry	mol% of acid				Ratios by ^1H-NMR
					2a	5a	6a
1	60	1 h	3 h	rt	26	48	26
2	30	1 h	3 h	rt	38	34	28
3	60	1 h	1 h 30′	Reflux	36	38	26
4	30	1 h	1 h 30′	Reflux	32	42	26
5	30	6 h	1 h 30′	Reflux	42	38	20