Tin-Catalyzed Esterification and Transesterification Reactions: A Review

Table 1

SnCl₂-catalyzed esterification of benzoic acid with propyl alcohol^a [7].

Run	SnCl2 (mmol)	Time (h)	Yield (%)^b
1	1	20	94
2^c	1	20	13
3	0.1	20	51
4	0.2	40	80
5^d	1	20	25

^aAll reactions were carried out with benzoic acid (2 mmol) and propyl alcohol (2 mL) at 100°C temperature, unless otherwise stated. ^bIsolated yield based on 1. ^cPropyl alcohol (2 mmols) in dioxane (2 mL). ^dTemperature 60°C.