1992 Volume 1992 Issue 1 Pages 63-67
Hydration of d-limonene [1], 2-pinene [2], 2(10)-pinene [3], camphene [4] and tricyclene [ 5] with water in the presence of synthetic zeolites was studied. The zeolite effects on the product distribution were examined. In the HSZ-710 HOA Zeolite, d-carvone [8] was obtained from [1] as a main product, amounting to more than 75.5% of the hydration products. Hydration of[2] gave a-terpineol [7 a] as a major product. In the 2020 AH zeolite, trans-verbenol [11] was obtained from [3] as a main product, amounting to 71% of the hydration products under the optimal conditions. Hydration of [14] with CuCl2 in the presence of HSZ-620 HOA zeolite afforded predominantly isoborneol [16]. Un der particular conditions, the C16D/n-borneol [17] ratio was 2: 3 or 1: 1. Hydration of [5]with Cu(OH)2 in the presence of HSZ-640 HOA zeolite gave 1161 as a main product.
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