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The highly effective heterogeneous catalysts, the aluminosilicates Tseokar-10 and Pentasil, were found to condense hydroquinones with tertiary isoprenoid allylic alcohols. Using these catalysts d,l-α-tocopherol, (2RS,4 R,8 R)-α-tocopherol, and vitamin К1-chromanol with chiral homogeneous side chains were synthesized in high yields. The analogs of α-tocopherol – chromanols and chromenols with the terminal isopropylidene group in the side chain – were synthesized, whose selective ozonolysis resulted in the corresponding chromanes with ω-formylor ω-hydroxyl groups in the side chain.

Synthesis of α-tocopherol (vitamin E), vitamin K1-chromanol, and their analogs in the presence of aluminosilicate catalysts Tseokar-10 and Pentasil