Table 1. Screening of Lipases for the Enzymatic Acetylation of HMFA (3)^a.

entry	enzyme	7a (%)b
1		<3
2	Novozyme 435	>99
3	EziG-CALB	>99
4	TLL	83
5	PSL	69
6	AK	31

^aReaction conditions: 3 (100 mM in 2-MeTHF), 1.3 equiv of 5a, and 1:1 w/w enzyme:3 ratio for 24 h at 30 °C and 250 rpm.

^bConversion calculated by GC analyses of the reaction crudes (see the SI for details).