Studies on the transacetalization efficiency of 2-alkoxy-3-enamines using (Z)-2-butoxy-6-chloro-3-((6-methoxybenzo[d]thiazol-2-ylamino)methylene)chroman-4-one (3aw) as a substrate.

Entry	Alcohol (20 mL)	Solvent	Time (h)	Product	Yield (%)
1	MeOH	MeOH	24	3ag	91
2	1-Octanol	1-Octanol	120	3bi	12
3	1-Octanola	Xylene	24	—b	—
4	—c	Xylene	6	—d	—
5	—c	Xylene	6e	—b	—

^a1 eq. of 1-Octanol.

^bDecomposed.

^cNo alcohol.

^dNo reaction.

^e50–100 °C.