Valuable polyester monomers and plasticizers—1,4‐cyclohexanedimethanol (CHDM), 1,4‐cyclohexanedicarboxylic acid (CHDA), and 1,2‐cyclohexanedicarboxylates—have been prepared by a new strategy. The synthetic processes involve a proline‐catalyzed formal [3+1+2] cycloaddition of formaldehyde, crotonaldehyde, and acrylate (or fumarate). CHDM is produced after a subsequent hydrogenation step over a commercially available Cu/Zn/Al catalyst and a one‐pot hydrogenation/oxidation/hydrolysis process yields CHDA, whereas 1,2‐cyclohexanedicarboxylate is obtained by a Pd/C‐catalyzed tandem decarbonylation/hydrogenation step.

中文翻译：

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由甲醛，巴豆醛和丙烯酸酯/富马酸酯合成1,4-环己烷二甲醇，1,4-环己烷二羧酸和1,2-环己烷二羧酸

通过一种新策略可以制备出有价值的聚酯单体和增塑剂-1,4-环己烷二甲醇（CHDM），1,4-环己烷二羧酸（CHDA）和1,2-环己烷二羧酸酯。合成过程涉及甲醛，巴豆醛和丙烯酸酯（或富马酸酯）的脯氨酸催化的正式[3 + 1 + 2]环加成反应。CHDM是在随后的商业化Cu / Zn / Al催化剂上进行加氢步骤后产生的，单锅加氢/氧化/水解过程可生成CHDA，而1,2-环己烷二羧酸盐则是通过Pd / C催化的串联脱羰/氢化步骤。