Process for production of sugar ketals

Details Process for production of sugar ketals Process for production of sugar ketals

C - Chemistry, Metallurgy

07

D

260/233.2, 260/3

C07D 317/12 (2006.01) C07H 9/04 (2006.01) C07H 15/207 (2006.01)

Patent

CA 1191844

Abstract of the Disclosure A process is disclosed for production of a sugar ketal, which comprises reacting a sugar with a ketone in the presence of (A) (1) copper, or an oxide, hydroxide or salt thereof and (2) hydrogen chloride or hydrogen bromide, or (B) cupric chloride or cupric bromide, said catalyst system being very effective in a small amount. The formation of unfavorable by-products can be reduced to a trace amount. The process offers the objective ketal in improved yields, and an industrially advantageous process.

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