Tin-Catalyzed Esterification and Transesterification Reactions: A Review

Table 2

SnCl₂-catalyzed esterification of carboxylic acids with propyl alcohol [7]^a.

Carboxylic acid	Yield (%)^b
	94
	67^c
	80^d
	84
	99
	95
	91
	89

^aReaction conditions: SnCl₂ (1 mmol), carboxylic acid (2 mmol), propyl alcohol (2 mL), 100°C temperature, and 20 hours reaction.
^bIsolated yield.
^cIsopropyl alcohol was used.  
^dSnCl₂ 0.2 mmol and 40 hours reaction.